Joseph,
The WTBS is a huge beaurocracy with many different departments. I don't think you should expect the organization to be completely logical and consistent. Yes they made a mistake. It may have been an honest mistake, or they may have been trying to keep it quiet for as long as possible to gain credibility as a UN associate.
At first they DID stonewall. But once the story broke, they got so many calls from the the rank and file that they had to act. There was a critical mass and they couldn't just brush this under the rug. There were probably people at the top who were uneasy about the whole association thing the whole time, but didn't have the power to stop it.
What it comes down to is that whether an innocent mistake or not, this organization claims to be guided by god. God would not allow his one true organization to be tainted by the beast. Thus it helps JW's to see that this is not god's one true organization.
I think you are taking in the WT's explanation a little too easily. It is obvious that the WT knew of the UN expectations for enrollment. If not, then they are severely incompetent, and that's not a good quality for spiritual leaders either. Can you explain how god's organization could enter in association with the UN and not know the expectations? I just don't see it. The fact that many people in Bethel didn't even know about the association helps confirm the fact that the men at the top were trying to keep it under cover because they knew it was shady. But the benefits were too great and they gave up their Christian Neutrality.
Like I said, let's not expect the WTBS to act logically and consistently all of the time. What made sense in 1991 might not make sense in 2001 either. These people thought Armageddon was going to come before 1995. Perhaps their strategies have changed? I don't know.
rem
"We all do no end of feeling, and we mistake it for thinking." - Mark Twain