I think that DAR was one of the people who left when I got booted off for a while for refusing to respect and leave alone some dodgy stuff going on on the forums.
Whilst I've received an apology from the board owners and come back (occasionally I do suspect against my better judgment), not everybody else did. DAR I am still in touch with, but I believe that his online presence now is mostly on a couple of other aviation forums - a Canadian one, and a European GA forum. Probably.
G