They won last year and he didn't talk shit. This is a moot point. Your only example was the way he looked on the sideline at the last play. That's it. That's not running your mouth. He still thinks he's the best corner in the game. He has zero incentive to be quiet due to some misguided view that he now sucks or the team isn't good. They were the #1 scoring defense for the 4th straight year this year. He could have ran his mouth before either playoff game this year. That's a national stage. He didn't. And he won't. He's got what he wanted. His paychecks are coming in from his endorsements. Case closed.
They didn't win last year. They lost in dramatic fashion, probably one of the top 3 worst SuperBowl mind-farts.
I say he is still the same asshat he always has been, you just haven't had a chance to see it.