Unacceptable.

NASCAR yanked Kyle Busch’s keys after his reckless attack under yellow on Ron Hornaday during Friday’s Camping World Truck Series race at Texas Motor Speedway.

While the race was under caution, Busch plowed Hornaday into the wall and effectively ended his quest for a NASCAR truck championship (Hornaday entered the race only 15 points behind the leader). It came moments after the caution came out for a jostling of Busch & Hornaday’s trucks that brought both into contact with the wall.

The race was under caution and his crew chief told him several times over the radio to calm down. Busch went ahead and drove Hornaday into the wall anyway. Reckless and irresponsible behavior that could have seriously hurt someone.

And did Busch apologize? No, he showed himself to be a jackass:

If everybody wants to say Hornaday is racing for a championship, roll over, that’s not my fashion. That’s not anybody else’s fashion out here.

There’s a difference between rolling over, and intentionally making someone crash into a wall — with the race under caution — just because you’re pissed. This isn’t a few football players tussling. You’re shoving someone into a wall at incredibly high speeds just because you can’t control your anger. Not acceptable.