It also looks like he was trying to leap behind Austin but was pushed by the defender into the fray and got vaulted higher. I agree with the claim of a split decision on his part and can't fault him for wanting the first down and that in hindsight was ill-advised.
And most are saying it was a bad choice, but there are many are taking it to very insulting levels when all he was doing was being aggressive. The "calm down" part was unnecessary.
Watch the video. Carr tried to leap over a very much standing up Austin, so much that he whacked Austin in the head. Carr didn't get push into Austin. The only reason why the defender touched Carr was because Carr collided with Austin.
I don't know why some are so indignant that others say it was a bad decision by Carr. It was a bad decision. The right decision would've been to dive behind Austin and stay in bounds, not try to leap over a guy he obviously cant leap over.
And being aggressive doesn't necessarily lead to good decisions.