I forgot about the brawl. Yes count that up as 1 instance of misconduct. That I know from him. When his teammate was being harassed after a win by a drunk fighter who wasn't even supposed to be in the cage. Yes it looks bad. Strikeforce was more to blame for letting a tanked Mayhem in there when he had no business being there. But yes, he reacted and was apart of it.
What is your point with the picture though? So smoking marijuana legally is a crime or a misbehavior? Hmm...
Jon Jones has a longer/worse list of misbehaviors, yet he is looked upon as a great champ.
Nick has had his handful of real problems he has caused. But Nate really hasn't, other than being apart of a dumb brawl that shouldn't of happened. Where respected guys like Gil and Shields reacted to as well.