Why did he release it now and and not sooner?
Because Hussein’s bosses wanted to save the release until 2012 — for maximum effect.
Today we've gone over almost every piece of information possible and the thing doesn't look so bad now. Sure, there are questions but it's mostly water under the bridge at this stage.
All of that is a good reason for revealing the Hawaii birth registration digital images.
Alas, he waited too long ~ at this point in time it looks like he and his crowd are simply incompetent. But we knew that anyway.