I guess, it was the Touchtone or similarly skin?
Sorry I say that, but you did have learn a lesson to NOT borrowing a skin from a another jukebox applications, without get the permission first. This is of course illigal, and the company would sue you before or later.
But i have to ask: Would did he not close down forum in meanstream mode, and just delete all threads, that have these skins? This is what, I would do.
I really hope you got the site up running again, and of course remove all competers skins as well (unless these, you have permission for).