Where's McClellan?

The White House Press Secretary hasn't given a briefing since Nov. 9. He was painted into an impossible corner when Rove and Libby assured him they were not involved in Plamegate and now his credibility- unfairly - is in tatters. He also went out on a limb by promising he'd answer all questions pertaining to the leak when the investigation has run it's course. If he's removed, both problems are mitigated. A new face's strategy could be to take a "can't speak to what Scott said" angle and launch a fresh defense when the stonewall comes tumbling down. Of course such a strategy would have to be limited to a very few specific points - Scott McClellan puts the White House on record when he talks from the podium. Or maybe it's just a vacation.