Considering that people who went to Vegas to see Pirate were not into the joke, I don't think that guy was an actor. If he was, he had to be introduced by Pirate to workings of this scam, be familiar with forum personas, be familiar with Bitcoin, cryptography and computer technology in general (Pirate is an IT guy, mind you). If he wasn't primed and well prepared, somebody surely would notice. You have his face, so what? Pirate's location (assuming is a correct one) is well known, his details are well known, $5m is missing and all you get is nerd cry and lawyer threats. By now he could move somewhere else within the US if he is not really trying, or is sipping pina coladas in Acapulco with new identity and fake beard.
One thing still unclear to me (assuming it was indeed a scam) is why he hasn't severed all communications and just went poof.