Should be a NC, it's not like Silva was showing a blatant disregard for the rules, he was swarming on Prater and some of the shots strayed slightly, ok, it's a fight, it happens. Ref's job, IMO, should've been to stand them back up, give Prater his 5 min to recover and warn or penalize Silva depending on the severity of the infraction. From what I saw, that deserved nothing more than a warning and the loss of position for Silva. I think what pissed Joe off was the timing of the call, where it seemed that Prater's complaints helped coax that decision from the ref, who knows? They should take back that Matt Serra win where Matt lands a hook behind GSP's ear and wobbles him up, enough to swarm and finish. If that's the official rule and all.