Closing his affiliate accounts of even his Forum is not going to make the Problem Go away...
He can reopen new affiliate accounts and run new Forums under new Domain names( there are 100's of them just like his)
what content producers need to do is go after the sites that are hosting the content
like:
http://www.filesonic.com http://oron.com http://filepost.com/ http://ul.to/ http://www.wupload.com/
why don't they?