It's alarming on the surface, but he HAD to know he was dealing with criminals with that volume of untraceable payments. I certainly don't think he should be facing criminal charges, but I can't imagine he's actually surprised.
Also, their website: http://www.extensionsoft.com/index.htm
Apparently designed in MS Word, minimal information, no product details (why not?), can't keep their own tagline straight (is it "International Software Systems" or "International Sportsbook Systems"?).
I hope it's not delving into ad hominem territory, but it's a shady website no doubt.