Looks like he is fairly active in Triad Sports Car Club. Since he is an officer of that club, maybe email all of the other officers and ask him to explain himself and his actions to his fellow club members. I would assume they would like to know that their president is ripping off other car enthusiasts.
Maybe go onto bimmerforums and find other TSCC members and ask them what the deal is, only thing you can really do now is get the word out that this guy has ripped sellers off. Most of us in the online car world don't take kindly to this kind of thing.
http://www.auto-x.com/forum/index.php http://www.auto-x.com/officers.php Also, it would appear that the hondatech person with the same handle is a different person. One lives in California, the other in North Carolina.