Dean is probably playing about two leagues over his ability.
First week, the Republicans set a trap, he looks at the trap, sticks his foot into it.
Can he keep quiet?
No, he makes noise which calls attention to the association between himself and Stewart. The news will repeat this (for the Republicans' benefit) until Dean wises up, and STFU.
Can you say: "minor leaguer?" I doubt he will last 4 years.
I believe he sees this as his stepping stone back as a Presidential contender. Ha. Ha.
Smart fish know they have to take the bait, to get caught.