I believe he was 'recruited' to tell her not to run.
I swear I read something to that effect, or perhaps it was just alluded to in a blog I read...but makes sense to me after seeing his later reaction to a question about her.
You are correct, t-dude, that speculation said that Christie was dispensed by the GOP-E to talk her out of running, FWIW.
President Palin? Gov. Christie Rolls His Eyes.
Presidential nominees and VP's have hated one another before --- Lyndon Baines Johnson and John Fitzgerald Kennedy to cite one triumphant duo, so Sarah Palin and Chris Christie wouldn't be the first, but Christie is not a conservative by any stretch of the imagination, so I can't see her choosing him in the first place!