I don't know if it's so much a case of a last rat deserting a sinking ship, as much as it is a case of politicking at it's most transparent. People have a tendency to hear and remember only what they want to, or only what they choose to. With Mccain singing Bushes praises one day, while bashing him the next, he could be hoping to boost his numbers. Those who support bush, will simply remember mccain's statements of support, ...while those who hate bush, might view Mccain's anti-bush statements, as the sign of a man who knows which end is up. Six of this, a half dozen of the other. I think the man is just courting votes.