So am I understanding this correctlly, GI was a SB member who posted often while offended many with his DIR rants on SB and on other sites?? I did a member search and he does not come up.
Oddly enough there were internet diving forums before SB. By the time SB got going George had started to wrap things up diving wise but his reputation was already known far and wide from his participation in other places, especially Techdiver. I seriously doubt SB would have let George on here anyway, even if he wanted to join.
For classic George stuff the best place to go is to the Techdiver archives. Try Aquanaut Mailing List Archive Service and search for "Irvine" or "Trey" or "GIII". All should bring up some of his posts; the good, the bad, and the ugly.