No, he went to prison because he assaulte your coworker, knowing that he could land in prison for life for a 3rd felony conviction.

I feel really bad for people with inner demons far worse than we all have. That doesn't mean you get to assault other people.

Ryan will be missing those teeth for the rest of his life. Quite possibly he'll have serious other health issues due to those missing teeth. Ryan didn't deserve that.

The old saying, "Your freedom ends where my nose begins" (or mouth, in this case) applie here. This could have happened in the bar and you'd have seen nothing of it.

In any case, this is definitely NOT your fault.