Padilla is probably John Doe #2 from Oklahoma City. He was the FBI man on the inside who let the FBI know at every step what was going to happen. He is mentioned in the thousands of pages NEVER released before McVeigh's execution. He should never have surfaced!
But, he did. That he did is, I believe, proof that the FBI isn't talking to other agencies (actually, how could they in this case) but, once the issue was public, it will have to go away quickly and, maybe, permanently.