It's hard to argue with success! and kudos to y'all.
As a pure speculation: it seems like the letter blitz provoked Mr. Hoeffel's response as a response to an irritation? If so, it certainly opened the door...but now perhaps a more focused follow-up might now be in order.
With that in mind, imagine this: If I was an executive in the UN, nothing would crank me up more than to realize that a 'successful' NGO-applicant had obtained access to my organization under totally false pretenses!
How about including a short selection (say, maybe a half-dozen or so) of the most vicious things the WTS has said about the UN over the last 50 years? LOL, I know, it would be hard to cull down such a list...but my gut tells me that these folks seeing such quotes would make them seethingly mad, and (within the limits of their own non-disclosure agreements, if any) much more willing to open up the documentation.
In any case: hawkaw, I/we can't thank you enough for all the efforts (mostly all behind the scenes ) that you, and folks like you, do.
Sincerest respects,
Craig