Nobody knows how bad Chism is. I think he was just knocked unconcious. Kinda like a boxer getting knocked out. He didn't know where he was for a few moments. He was strapped to the board for precaution only. We don't know that he couldn't get up and walk away. Saying that he will be out a month is stupid. Nobody knows what his condition is at this point.
Agreed. It didn't appear that he injured anything, I think it was more of a stinger and a mild concussion. Err on the side of caution in all of those situations though.