I agree that the WTBTS explanation here makes no sense. Timing is off all around. The "two witnesses" were given authority to prophecy for 1,260 days, or 42 months. If that was from the beginning of the last days (October 2, 1914), that would come to an end on March 15, 1918. However, WTBTS doesn't count this way. They count backward from the time of imprisonment. Thus, the Daniel's Prophecy book on page 296 paragraph 18 says:
"The prophecy is quite explicit as to when the 1,260 days would end—when there is “a finishing of the dashing of the power of the holy people to pieces.” In the middle of 1918, leading members of the Watch Tower Bible and Tract Society, including its president, J. F. Rutherford, were convicted on false charges, sentenced to long terms of confinement, and imprisoned. God’s holy ones did indeed see their work ‘dashed to pieces,’ their power broken. Counting back three and a half years from mid-1918 brings us to the end of 1914.
Is this so? According to page 143, paragraph 31 of the same book, we find this:
Harassment of God’s anointed ones climaxed on June 21, 1918, when the president, J. F. Rutherford, and prominent members of the Watch Tower Bible and Tract Society were sentenced on false charges to long prison terms. Intending “to change times and law,” the “small” horn had effectively killed the organized preaching work. (Revelation 11:7) So the foretold period of “a time, and times and half a time” ended in June 1918.
So, let's count backward 1,260 days from June 21, 1918. Does it result in "the end of 1914?" Not at all! It brings us to January 8, 1915. Another lie.