I think we need to coin your term: "[Going] Nixon on us!" Funny!
And then, based on paranoia or lack of wisdom or stress or megalomania or whatever, he will slip and do the impeachable.
My wife and I were just taking about this very thing this morning. In particular, I told my wife, I believe Palin is toying with this guy to make him blow a head gasket, and totally lose it in public!
I beginning to think Palin is doing an Alinsky on Obama!
You're right! An interesting thing is that this past election, even if it hadn't been Obama, but Hillary had landed the presidency or if McCain had landed it, either one -- the occupant would have had a meltdown, "gone Nixon," pulled a Queeg, caught fire and blown up. Personally, I think Hillary would have been the most fun to watch.
I think the pressure of not being adorned for every word he utters is getting to him. I suspect he is taking something for some “relief” (read booze or drugs) and it is showing in his face. Sometimes he looks quite drained/hungover to me.