Cheney's endorsement

How nasty and mean spirited is Dick Cheney? Well, let's answer that question with another one: what are the chances that Cheney, with 40 years experience in politics, didn't know the impact his endorsement would have? Maybe he figured the election was lost anyway, McCain has been going around attacking Bush (and by extension, Cheney), so he might as well stick the knife in, get a little vengeance, tell someone to "go fuck yourself" one last time, while anyone still cares what he thinks or says. Kind of a political hunting accident: he "accidentally" shot McCain in the face with his endorsement.