"It is possible that a little courage may have transferred to Gregory during the President's trip to Afghanistan, India and Pakistan. Maybe he witnessed a real man facing down real - as in carbombs going off - threats."
Great point, maica! And/or he may still be embarassed about the press he got from a) being a rude idiot to Scott McClellan and b) being 'high' on Imus's show and decided he better chill awhile.
I don't think he feels bad about harassing McClellan, but he might very well have gotten a little "performance evaluation" talk from an NBC exec after his performance on Imus' show, and is chillin' for that reason.