I suggest we all leave "Toil" alone because he likely had nothing to do with this whole ordeal. By posting his personal information here and talking about paying him a visit etc... you're doing exactly what the hacker wants.
Good point. He still might have an idea of who would have or could have done this. Additionally, he has IP logs of his visitors, they could be used to collaborate the hack on Ozcoin, and the attackers IP might have also visited a few specific locations on his forum prior to the defacement action.
There's a TON of reasons for him to be spoken to, none of which have to do with him being the culprit but most of which have to do with forensics.