http://www.signonsandiego.com/news/2010/se...still-attached/
now you don't have to bring a runner down to stop him, you just have to rip his helmet offisn't this exactly the sort of behavior the league is trying to stop?It says a lot about Tolbert’s tenacity that after the protective cover was ripped off his head behind the line of scrimmage on a third-and-1 carry in the first quarter, he continued to spin forward into a crowd of Seattle Seahawks and actually gain enough yardage for a first down. Especially with so much focus on concussions and other head injuries, though, the officials enforced the new rule that the play dies at the spot where the helmet was detached.
“They ripped it off like four times,” said Tolbert, referring to the Seahawks defense. “Even when I tightened up my chin-strap, it came off. It wasn’t like it was just falling off, either. I was trying to break tackles and they were trying to pull it off.”