I know this much--her lying hubby told Wolf Blitzer she was not "clandestine" the other day, and then made a "correction" (and no reporter gave him the crap they have been giving McClellan).
Consider me skeptical that her husband is unsure of her status. Plame could clear this up with a one-sentence comment. Seems to me if she said she wasn't covert, the story and her fame would collapse; if she said she was covert, she's setting herself up for serious repurcussions for lying. Either way, it benefits her to shut up unless she was covert--then, by telling the truth, she gains everything.
So it seems that her not coming clean proves she and her husband are lying.