That sounds pretty harsh. Why not open up a thread in the Disputes section of the forum and air this out there?
http://forum.audiogon.com/cgi-bin/fr.pl?zdisp&1&ctg&0&50&
http://www.audiogon.com/help/disp/drp.html
Did Coacher stiff you on a transaction? I didn't see anything listed under that ID.