Corona is far from omnipotent. In the past few months I've PKed him about 20 times and mugged countless little items that he's picked up. Granted he #kill's me back, but only because he knows I don't really care (and actually find it quite amusing). Corona isn't an abusive admin, he's just a guy with a horrible sense of humor. I mean really bad.
I have no doubt that he'd help you if you ever came back to the server. Oh and helping means giving you assistance in enjoying the game (shields, transports, maybe even some cash), not in giving you massive amounts of dust or coin and helping you to exploit the game as it is.