A much more likely connection is to good old bill clinton and his pals in the anthrax-defense industry, such as Bioport. Clinton, Crowe, and company have a big interest in selling anthrax vaccine to the government.
I expect Tom Ridge and the clintonoids at the top of the FBI will continue to mutter about Jerry Falwell, right-to-lifers and right-wing Christians, while failing to find the actual culprit--since I suspect that the actual culprit has much too good political connections to be caught.
I'm guessing, of course, based in part on the rumors floated in Geneva and the biologist convention. But I fail to see how any of the organizations you name could possibly get their hands on that kind of anthrax.
1. They stole it.
2. They got it from their neo-Nazi brethern in Europe.