On November 4, 2011, Busch was involved in an incident during the 2011 WinStar World Casino 350K at Texas Motor Speedway. After a racing incident with series regular and championship contender Ron Hornaday, Busch deliberately turned him into the outside wall under caution, ending Hornaday's title hopes. NASCAR black-flagged Busch for the rest of the race. The next morning, NASCAR announced that Busch would remain parked for the remainder of the weekend, including the 2011 O'Reilly Auto Parts Challenge and the 2011 AAA Texas 500.