Forgive my elegant skepticism, but even if the Society changed it's views on the UN to the effect that it is not neccessarily going to be the organization that crushes all religion and tries to ban the JWs, that still would not negate the fact that the WT was blatently taking part in a worldly, governmental organzition. The WT would still continue to view it as part of Satan's organization, although it would have a possibly diminished role in future prophecy.
My point is that changing the prophetic interpretation would not really "cover their asses" anyway, since they still would be in violation of their strictly neutral position. So, if the changed thought doesn't really help "explain" the WTs role in the UN, why do we need a conspiracy theory to account for it?
Just a thought,