If you were Ricky though, wouldn't you have tried to lay low and stay out of it being that your the high profile LSU recruit and brother of former LSU QB. He had to have done something to warrant getting arrested.
But if you're just out having fun at Mardi Gras and some dude starts beating on your buddy your first reaction is to get in there and help. I'd rather someone like that play for LSU than some pussy that leaves a friend hanging after getting attacked.
This is all based on the assumption that they didn't know this was an undercover cop and he never identified himself.
Even then sometimes cops step over the line. There's hundreds of youtube videos that prove it. I think just b/c someone is a cop it doesn't make them immune to getting their arse beat of they did something unwarranted.