I am not going to press this to a ban as it seems like a 1 time occurance and the game has been glitchy as bukkit is fugged up....but anywho...yall should read this and use it to prevent this kind of thing in the future:
http://minetown.net/forum/m/672632/viewthread/2130300-pvp-solution-in-end-all-pvpers-players-read-this
http://minetown.net/forum/m/672632/viewthread/2130300-pvp-solution-in-end-all-pvpers-players-read-this