Very well written and easy to read article. Although I know the WTS to be dishonest, to be so blatantly dishonest is a little stunning. It actually makes me angry that I actually believed this stuff at one point not so long ago. There are lots of reasons to recognize that there is no way the WTS is God's sole channel of communication on earth. False prophesy, lack of love, etc. But, I think this sort of dishonesty and selective quoting is by far the biggest indicator that they have no divine backing.
This is where they always get themselves in trouble. Rather than saying that God revealed this date to them and leave it at that, they try to "prove" it using secular sources and changing a verse in their bible to match their teaching. That someone can deconstruct their argument so thoroughly using the same source they are makes them look much worse. Rather than being misguided, they are shown to be devious.
They know that the 607 date must be defended at all costs. Here's the crazy thing, if you used the real date and pushed their crazy 2520 year theory out another 20 years, that would put Jesus coming to power in 1934 with their "selection" in 1938. Add a 80 year "generation" and you get 2014. I wonder why they didn't do that back in 1995? Instead, they changed the definition 3 of what a generation is 3 times to cover up the obvious.