John has good analysis, but I want to add one more thing. Previously Booby had claimed the conversation was off the record. It's already been pointed out that's a bit weird to take an off the record conversation and casually tell your colleague of that conversation (as he claims he did to Pincus). But the other thing is if the conversation was off the record how is it possible that he may have (he says he doesn't remember) asked Libby about Wilson's wife working for the CIA?
What the hell does off the record mean?