Yep. Very smart. The GOP, in spite of the economy, is still a slight underdog for this race, and if you lose once, it is unlikely you will be nominated again, Richard Nixon notwithstanding. But Christie's support could be one hell of a big bargaining chip to get him things he wants, including a bit of logrolling in the next election. So for right now, he sits back and plays kingmaker. Nobody criticizes him. Nobody dares mess with him. He's got a pretty enviable position on his yacht in this sea of sharks.
And maybe. Just maybe. He really doesn't want the job of president. That's a position I can empathize with.
But After the Pope and the guy who controls the Bilderberg thingy why wouldn't you want to have the third most powerful position on Earth?