Recently I was researching the scripture used to justify why DA'd ones were to be shunned the same as DF'd ones and decided that this could easily be turned around. They use 2 John 9-11.
9 Everyone who pushes ahead and does not remain in the teaching of the Christ does not have God.+ The one who does remain in this teaching is the one who has both the Father and the Son. 10 If anyone comes to you and does not bring this teaching, do not receive him into your homes or say a greeting to him. 11 For the one who says a greeting to him is a sharer in his wicked works.
Reading this, it's very easy to apply this to the org since their own publications have many examples of them pushing ahead of the teaching of the Christ. While the org can argue that they aren't prophets (even though they act like it and have even used the word to describe themselves), they can't argue that they haven't pushed ahead since many of their teachings have subsequently been reversed. The original teaching of 1914, for example, is a clear indication of pushing ahead. Also the types and anti-types teachings that were recently changed, organ transplants, Jesus coming in 1914 vs Jesus presence in 1914 all are easy examples of the org "pushing ahead".
I thought this might be a useful reasoning to use with JWs who say that the GB are not prophets. I shared it with my wife (still-in and I'm still going for now) and she didn't deny that the org could be guilty of pushing ahead.