Sit down and shut up? Well, heck yeah. Most of us watching wanted the guy to "sit down and shut up." He was rudely disrupting the governor. Trust me, this incident will help Christie in the polls - guaranteed.
Christie's politics are too moderate for me. But, so what? Turning the nation around will take generations and many administrations. Christie would be a good start in reining in the democrats. He was polling well even against Hillary until the bridgegate scandal and he even weathered that silly kerfuffle.
I doubt he could get the nomination. And even if he did, I doubt he could win because he is anathema to three groups: democrats, tea party and establishment Republicans. And the way I see it, having two out of three of those against you makes you the good guy. And that ain't bad.