I was right behind the bench at the game.
Birden was walking around the sideline after he came out. he had his helmet at first, but not later--not sure if it was taken or if he put it down somewhere.
But he was spoken too on several occasions by coaches. Appeared to me he wanted back in and they wanted to keep him out. It appeared it was a precaution.
He appeared fine after the hit. I'm guessing he's fine this week.