What will be interesting now is what he does with what he believes to be profits from an illegal venture.
Keep them, presumably? After all, he risked - or at least tied up - a substantial chunk of his own money in order to convince others that yes, he genuinely did believe that BTCS&T was a ponzi scheme in the face of cries of "troll!" and "put your money where your mouth is or shut up!" from Pirate supporters. I think that more than pays off any ethical obligations he might have. Also, he kinda predicted this on about the second page:Wait, I get it. When you default, the users come raging at me screaming I have their money. 
Edit - and the fourth page:
The only "pocket ace" I'm afraid of is people discrediting me for obtaining stolen funds I can't pay back for a multitude of reasons. I don't think that is something Pirateat40 cares about though, and I'm not so certain he wants to get back at me. Just playing his game like a pro.
And if you expect me to believe that Pirate's supporters would've let him back away from the bet being offered because of this, you have another thing coming.