Jourles,
The point you make about the internet speeding up knowledge of this issue is a good one. However, I tend to feel that this is offset (at least to some degree) by the fact that Witnesses are not exposed to the UN/NGO issue like they were to the 1975 issue. Each and every Witness had 1975 put before them by the Society; Witnesses will most likely hear about the UN issue only from 'apostate' sources. Therefore, the Society will deny/downplay/rationalize the NGO's existence. The result? Since most Witnesses listen to the 'Society' and not to 'apostates', it seems that it could take a while for this issue to have an effect on the organization en masse.
I believe you are right when you say that nearly every congregation will be exposed to this issue within a few months. However, we all know that the WT is GREAT at rationalizing their way out of trouble, at least in the short term.
In short, I'm just speculating. I'm curious to see what time will bring. Either one of us could be right. Personally, I hope YOU are RIGHT and I am WRONG.