I'm not buying it either. If he had planned this, his answers would have been more coherant. This clearly was a man not in control of his thoughts, arguments, or logic. Everyone is so used to clinton being *slick* that they cannot believe he is capable of losing it. He lost it. That wasn't an act.
Makes one wonder if he has always had the questions ahead of time.
When Wallace started asking 'the question', Slick looked like a deer in the headlights - looked to me like for about 30 seconds he didn't know where he was. Then the 'fight or flight' response kicked in...