As for the Wilson quote I refer you to the transcript:
BLITZER: But the other argument that's been made against you is that you've sought to capitalized on this extravaganza, having that photo shoot with your wife, who was a clandestine officer with the CIA, and that you've tried to enrich yourself writing this book and all of that..
What do you make of those accusations, which are serious accusations,as you know, that have been leveled against you?
WILSON: My wife was not a clandestine officer the day that Bob Novak blew her identity.
BLITZER: But she hadn't been a clandestine officer for some time before that?
WILSON: That's not anything I can talk about. And indeed I go back to what I said earlier, the CIA believed that a possible crime had been committed, and that's why they referred it to the Justice Deparment.
If "context" means anything, then you'd agree that they are talking about Wilson's actions (Vanity Fair, book deal etc.) since his wife was outed. Wilson is not confirming that his wife wasn't undercover but is instead attacking Novak. Poorly worded, but an attack nonetheless otherwise there really isn't anything to keep him from confirming Blitzer's assertion that she wasn't undercover previous to being revealed by Novak. Instead, he says, as he should, the he can't directly talk about it and refers to the actions taken by the CIA as he has repeatedly in the past.