He's reading a script handed to him by the left. Murtha is compromised. He's always been a shady character --- back to the days of ABSCAM when he should have ended up in the Iron Bar hotel with the other congress critters. Now he is being extorted and is doing what he's told to keep his ass out of prison.
I get a creepy feeling when I read that, especially when I know who's paying the tab.
It would be good if some of the people here at FR that are so good at investigating could spend some time on that.