And I think that saying helmets were coming off more at the beginning of the season is kind of a skewed perception simply because with the new rule, a helmet coming off is 1000 times more noticeable becuase the player having to leave the game, and the officials explanation making it an event within the game. Before, helmets coming off were probably not even noted. Dont know that there is even any stat tracking to even justify either side of that point.
It does seem to me theyve been coming off less and less as the season wears on, in all games that I look at, not just ours.