If memory serves me correctly, sirus and satoshi both founded the forum, so it would make sense for sirus to take it over when satoshi left, and theymos was active around here in the very early days, was made a moderator, made his way up the "ranks" to eventually be made an administrator, and presumably ran the forum well enough to eventually have control over the server.
From what I can tell, cobra just kinda appeared out of nowhere and was running things.
So since Theymos has been around from the early days, is it possible that he is one of the few people on this planet who would know about Satoshi's true identity? Doesn't that make Theymos a Person of Interest for Satoshi chasers, including agencies like CIA. Just curious!