The Lord Jesus taught the disciples to take, eat and drink of the emblems set before them. They were instructed that everyone who was a believer in the room was to take of it.
Matthew 26:26-28 KJV
And as they were eating, Jesus took bread, and blessed it, and brake it,
and gave it to the disciples, and said, Take, eat; this is my body.
 And he took the cup, and gave thanks, and gave it to them, saying,
Drink ye all of it;  For this is my blood of the new testament,
which is shed for many for the remission of sins.
Mark 14:22-24 KJV
And as they did eat, Jesus took bread, and blessed, and brake it ,
and gave to them, and said, Take, eat: this is my body.  And he
took the cup, and when he had given thanks, he gave it to them: and they
all drank of it.  And he said unto them, This is my blood of the new testament, which is shed for many.
Luke 22:12-20 KJV
And he shall shew you a large upper room furnished: there make ready.
 And they went, and found as he had said unto them: and they made
ready the passover.  And when the hour was come, he sat down, and the twelve apostles with him.  And he said unto them, With desire I have desired to eat this passover
with you before I suffer:  For I say unto you, I will not any more
eat thereof, until it be fulfilled in the kingdom of God.  And he
took the cup, and gave thanks, and said, Take
this, and divide it among yourselves:  For I say unto you, I will
not drink of the fruit of the vine, until the kingdom of God shall come.
 And he took bread, and gave thanks, and brake it ,
and gave unto them, saying, This is my body which is given for you:
this do in remembrance of me.  Likewise also the cup after supper,
saying, This cup is the new testament in my blood, which is shed for you.
When we come to the Apostle Paul, the Lord Jesus gave revelation to him to preach the Gospel and Church Doctrine to the Gentiles, in which Paul delivered. He received of the Lord the Gospel (Gal 1:6-9) and he preached that his Gospel should be obeyed (1 Cor 15:1-4)
Further to the Gospel, the Apostle Paul also taught the church how to remember the Lord Jesus.
1 Corinthians 11:23-29 KJV
For I have received of the Lord that which also I delivered unto you,
That the Lord Jesus the same night in which he was betrayed took bread:
 And when he had given thanks, he brake it , and said, Take, eat:
this is my body, which is broken for you: this do in remembrance of me.
 After the same manner also he took the cup, when he had supped,
saying, This cup is the new testament in my blood: this do ye, as oft as
ye drink it ,
in remembrance of me.  For as often as ye eat this bread, and drink
this cup, ye do shew the Lord's death till he come.  Wherefore
whosoever shall eat this bread, and drink this cup of the Lord,
unworthily, shall be guilty of the body and blood of the Lord.  But
let a man examine himself, and so let him eat of that bread, and drink
of that cup.  For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body.
The Aposlte Paul indicated that everyone in the room are to examine themselves to see if they are worthy of taking the supper (Not worthy as in Heavenly or Earthly, but wither or not they were in fellowship with God by way of their walk).
The Jehovah's Witnesses claim that they have two hopes (Heavenly and Earthly), the Heavenly are those who can partake of the emblems. Yt the Apostle Paul indicated that we all belong in the ONE body (Which is Christ, not an organisation)
One Body :
Ephesians 2:14-16 KJV
For he is our peace, who hath made both one, and hath broken down the
middle wall of partition between us ;  Having abolished in his flesh
the enmity, even the law of commandments contained in ordinances; for
to make in himself of twain one new man, so making peace;  And that
he might reconcile both unto God in one body by the cross, having slain
the enmity thereby:
Romans 12:5 KJV
So we, being many, are one body in Christ, and every one members one of another.
Colossians 3:14-15 KJV
And above all these things put on charity, which is the bond of
perfectness.  And let the peace of God rule in your hearts, to the
which also ye are called in one body; and be ye thankful.
Although the Jehovah's Witnesses have two hopes (or two classes), the Apostle Paul preached that we have only ONE hope, which is in Heaven.
One Hope :
Ephesians 4:3-5 KJV
Endeavouring to keep the unity of the Spirit in the bond of peace. 
There is one body, and one Spirit, even as ye are called in one hope of
your calling;  One Lord, one faith, one baptism.
Colossians 1:3-5 KJV
We give thanks to God and the Father of our Lord Jesus Christ, praying
always for you,  Since we heard of your faith in Christ Jesus, and of
the love which ye have to all the saints,  For the hope which is
laid up for you in heaven, whereof ye heard before in the word of the
truth of the gospel;
This corresponds to the Lord Jesus' words when He taught in the Gospels to "Lay up treasures in Heaven, not earth".
As the Jehovah's Witnesses are of two separate minds, concerning who are of the Earthly class and who are of the Heavenly class, the Apostle Paul taught that believers in the Lord Jesus Christ are to be of the ONE mind.
One Mind :
Philippians 3:14-21 KJV
I press toward the mark for the prize of the high calling of God in
Christ Jesus.  Let us therefore, as many as be perfect, be thus
minded: and if in any thing ye be otherwise minded, God shall reveal
even this unto you.  Nevertheless, whereto we have already attained,
let us walk by the same rule, let us mind the same thing. 
Brethren, be followers together of me, and mark them which walk so as ye
have us for an ensample.  (For many walk, of whom I have told you
often, and now tell you even weeping, that they are the enemies of the
cross of Christ:  Whose end is destruction, whose God is their
belly, and whose glory is in their shame, who mind earthly things.) 
For our conversation is in heaven; from whence also we look for the
Saviour, the Lord Jesus Christ:  Who shall change our vile body,
that it may be fashioned like unto his glorious body, according to the
working whereby he is able even to subdue all things unto himself.
From the verses provided and what was said in the video, there is clear evidence from the scriptures alone, that the JW's memorial practice goes directly against the word of God.