To Quote Rocket, http://dayzmod.com/forum/index.php?/topic/6718-disconnecting-to-avoid-death/ "I don't know why, but people are assuming that I think this is part of the game. It's not. I posted in a thread that was talking about that, that META-GAMING is explicitly allowed. I.e. infiltrating teamspeak servers and groups etc... Disconnecting to avoid death IS an exploit. It will be patched out, very easily, in a future update. The update is ready to go and will be released when the Beta patch for ArmA2 is out." Purposely using an exploit. The ban stands.