"The Cowboys offensive linemen had a day to forget. They combined for six penalties for 55 yards, including a false start on Doug Free on special teams. They allowed six sacks. Right guard Leonard Davis got benched, and his replacement, Montrae Holland, was left with stitches in his nose and a right eye nearly swollen shut.The most costly error the group made came on, of all things, a touchdown celebration. After scoring an 18-yard touchdown to tie the game at 27, Cowboys tight end Jason Witten gave right tackle Marc Colombo the ball. Colombo spiked it, and the two chest bumped. But Colombo lost his balance on the landing and fell to the ground. Officials penalized the Cowboys 15 yards for Colombo going to the ground."Do your homework and watch the television," Colombo said when asked about the penalty before refusing further comment. The Cowboys were confused about the penalty and complained about it. But coach Wade Phillips said officials told him it didn't matter that Colombo ended up on the ground by accident. Rule 12, Section 3, Article 1 (d) of the NFL Rule Books states that "players are prohibited from engaging in any celebrations while on the ground.""We did the chest bump, and he kind of accidentally falls down," Witten said. "I don't think he was trying to do anything different, but it's a call, and it's disappointing for us."Cowboys kicker David Buehler kicked off from the 15, because of the penalty, and Marc Mariani returned the kickoff 73 yards before Buehler brought him down by the facemask, tacking on another 6 yards. The Titans started the game-winning drive at the Dallas 5." Read more: http://www.star-telegram.com/2010/10/10/2536057/cowboys-notebook.html