FORT WORTH, Texas – Kyle Busch finally went too far for NASCAR, even in the era of “Boys, have at it.”

The often volatile Busch was barred from driving in the Sprint Cup and Nationwide races at Texas this weekend, a rare step taken by NASCAR after he deliberately wrecked championship contender Ron Hornaday Jr. during a caution in the Truck Series race there.

NASCAR president Mike Helton announced the decision Saturday after a meeting with Busch and Joe Gibbs, his Sprint Cup and Nationwide car owner.

“The responsibility that over the past two or three seasons we’ve given back to the drivers came I think with a very clear understanding that there could be a line that got crossed,” Helton said. “And as annoying as the comments that I’ve made personally in the past about we’ll know it when we see it might have been, we saw it last night.”

Busch is the first driver since Robby Gordon in August 2007 to be taken out of a Cup race for actions in another NASCAR race the same weekend. Kevin Harvick, the owner of Hornaday’s truck, was kept out of the Cup race at Martinsville in 2002 after an incident in a truck race there the previous day.

“This is a tough situation for us and basically what we’re trying to do is go through it the right way,” Gibbs said. “Everybody here with our race team is trying to meet with everybody that was affected by this, and obviously we’ve got a lot of work to do there and a lot of people to see. But we’re going to try to go through this and try to handle everything in the right way.”

Michael McDowell will take over in today’s race for Busch, who was seventh in the Chase for the Sprint Cup championship standings.

Denny Hamlin, another Gibbs driver, took over Busch’s Nationwide seat Saturday.

Helton didn’t rule out more penalties for Busch after the weekend but said not letting him race shows how serious NASCAR felt about what happened Friday night.

“The rarity of those times that we’d make a step like this speak to the uniqueness and the severity of the topic,” Helton said.

Gibbs said he hadn’t had time to determine whether Busch would face additional penalties from the team. The owner met with Busch in the driver’s motor home but didn’t share what was said.

“It’s one of those personal conversations you have when a real tough situation like this comes up,” Gibbs said.

Harvick said there has to be an end to the retaliation piece of the “Boys, have at it” mantra.

“Whether it’s Kyle Busch or anybody else. This is not late-model racing. I mean, this is professional stock car racing,” Harvick said Saturday. “We all make mistakes. We all do things sometimes out of character. You know if things continue to progress, we’re going to hurt somebody.”

Hornaday was knocked out of Friday night’s race on the 14th of 148 laps when Busch retaliated for contact between them by pushing the four-time champ into the wall. The trucks made contact after trying to go three-wide around a slower truck and both brushed the wall.

Busch, driving a truck he owns, got behind Hornaday and kept pushing until the No. 33 truck wound up in the wall. NASCAR immediately parked Busch then, and officials met with him briefly after that race before telling him to come back Saturday morning.

“I lost my cool, no doubt about it. I’ve been wrecked four weeks in a row, and I’ve had enough of it, and I retaliated,” Busch said by his hauler after the wreck Friday night. “So it’s certainly my fault for doing that. 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.”

Bayne gets first Nationwide win

Trevor Bayne earned his first career NASCAR Nationwide victory when he passed dominating teammate Carl Edwards after a tremendous restart with seven laps remaining and held on at Fort Worth.

Bayne won the Daytona 500 this year but had never won in his previous 76 Nationwide starts in the series where he is a regular for Roush Fenway Racing.

Edwards, the Cup points leader, led 157 of 200 laps at the 1 1/2 -mile track. He still led on the last restart before Bayne got a good run and eventually got by him.

Bayne’s victory secured Ford’s third manufacturing championship in the series.

Nationwide points leader Ricky Stenhouse finished sixth and has a 17-point lead over Elliott Sadler with two races to go.