We never knows that or atleast its not discussed publicly on forum anywhere but with the help of this thread we found that theymos is actually helping the forum members via PM as well as via threads like this.
It's not public information because it probably doesn't happen that often. Besides, theymos isn't looking to rob its users of a few hundred or thousand $ worth of Bitcoin when Bitcointalk has millions of $ in its reserves. And yeah, theymos is responsive via PM for forum-related questions or bugs. I assume all the other admins/mods would be as well.