UPDATED AGAIN (UPDATE #4)
Called BMW of Riverside. Very nice folks over there. They seem to have never heard of anything like this (not even his post about them) nor his name. I smell defamation:
THIS SEEMS TO BE A COMPLETE FABRICATION:
http://www.m3post.com/forums/showthread.php?t=804142
Four pages of us assisting this guy on a fake problem and probably costing BMW Riverside business in sales, service, and generally giving BMW a bad name.
Next stop BMW of NA and a round on the other forums!