Nope. (Donning flame-retardant underwear.)
Woodward is actually pretty non-partisan, IMO. He was raised in a Republican family (I know, so was Chris Matthews) but I think Bob Woodward is pretty much out for Bob Woodward. He's working on a book, and I figure he wants a marketing blast-off with the info he's holding close to the vest. He only mentioned this conversation about Plame to his bosses at the Post a month ago. Probably because his lawyer told him he better.
If Libby's alleged crime was lying to investigators, and Woodward (or someone else) knew something but failed to proactively inform investigators, then Libby might not have been put into the position where he lied (or forgot) because investigators might not have had to ask questions because others volunteered facts that could have stopped the investigation before they got around to questioning Libby.
-PJ
Woodward is just a totally irrelevant figure in journalism. Sure, he suddenly became important for this case with his testimony.
BTW, a stupid question.....why can't he be charged with obstruction of justice? :-)