Stewart tells Sanford that Michael Jackson's death was basically a "get out of banging your mistress free card" and the Governor didn't use it to his advantage. Sanford's best course of action would be to just shut the hell up.

Here is a quote from Stewart in the clip:

He gave another interview? God killed Michael Jackson to save your ass, and you gave another interview.

Sanford really is taking this honesty is the best policy way to offer after cheating. If that was his actual policy than he should have kept his dick in his pants in the first place. The Governor really is just being a complete moron.