Yeah, the admin you're referring to is me.  We were trying to investigate the bug at the golf course.  I would use /bring to bring him to me, and as soon as he started running around it teleported him to some other location.  If he stood still for a moment, nothing would happen.  It only triggered when he started to run away.  So next he tried spawning at the golf course, and again the same thing happened.  Every time I would /bring him out of the bug, he'd run around for a moment and suddenly teleport back to the "ghost city" as he describes it.  We eventually discovered that it didn't matter where he spawned, the same thing would happen about 5-10 seconds after he spawned and tried to move away from the spawn point.  Evidently, this bug has happened to several people.