Why does the GB want the disloyal?
The GB are God's government on earth. They are the faithful stewards who have created (with Jesus' help) a proto-society of citizens. So in that sense they don't 'want' the disloyal, as they can't even grasp the raison d'etre of a disaffected member. The GB can't conceive of disloyal members remaining inside the spiritual paradise, but they sure know how to deal with those that reveal themselves.
Luke 8:17 "For there is nothing hidden that will not be disclosed, and nothing concealed that will not be known or brought out into the open."
The undercover disloyal are an unsolvable problem that God will take care off at the proper time - see above scripture - the GB wait on Jehovah too - its a well established principle that has served them well over the years. So each and every apostate proves them right - see, God does clean the Org in his own time.
Jehovah is cleaning the Org, Jehovah is growing the Org - its all good.