IN the header file (.h)

bool hasLogged = false;
bool inZone = true;

static Position sTeleOut[] =
{
    { -4286.56f, 1330.970f, 161.21f, 0.019994f }
};

void DoSendCompleteMessage(string who)
{
    stringstream ss;
    ss << who.c_str()
        << "has completed the Dire Maul Arena Event!"
        << "The event is now opened and ready for another victim!";
    sWorld->SendGlobalText(ss.str().c_str(), NULL);
}


IN THE .cpp FILE under Arena Commander's ScriptedAI:

ADD THIS ABOVE YOUR Reset() function
uint32 checkPlayer;

UPDATE YOUR Reset() function and add:

checkPlayer = 1000;

               if(checkPlayer <= diff)
               {
                   if(m_PlayerGUID == 0)
                       return;

                   if(hasLogged || !inZone)
                   {
                        isBattleActive = false;
                        summons.DespawnAll();
                        events.Reset();
                        isWaveBossDead = 0;
                        checkIsDead = true;
                        hasLogged = false;
                        inZone = true;
                        resetOnce = false;
                        player = NULL;
                        m_PlayerGUID = NULL;
                        playerName = "";
                        sWorld->SendGlobalText("A challenger has been scared off and left the Dire Maul Arena Challenge! Who's next?", NULL);
                   }
                    checkPlayer = 1000;
               }
               else
                   checkPlayer -= diff;



THIS IS WHEN THE PLAYER COMPLETES THE EVENT: (Under, EVENT_COMPLETED_WAVES)
DoSendCompleteMessage(player->GetName());

IN THE .cpp FILE UNDER THE PlayerScript:
class remove_non_battle_player : public PlayerScript
{
   public:
       remove_non_battle_player() : PlayerScript("remove_non_battle_player") { }

       void OnUpdateZone(Player * player, uint32 zone, uint32 area)
       {
           if(m_PlayerGUID == 0)
               return;

           if(player->GetZoneId() != DIRE_MAUL_ZONE && player->GetAreaId() != DIRE_MAUL_AREA && player->GetGUID() == m_PlayerGUID)
           {
               inZone = false;
               return;
           }

           if(player->GetAreaId() != DIRE_MAUL_AREA || player->GetSession()->GetSecurity() > 1)
               return;

           if(isBattleActive && player->GetGUID() != m_PlayerGUID)
           {
               player->TeleportTo(player->GetStartPosition().GetMapId(), player->GetStartPosition().GetPositionX(), player->GetStartPosition().GetPositionY(),
                  player->GetStartPosition().GetPositionZ(), player->GetStartPosition().GetOrientation());
               ChatHandler(player).SendSysMessage("You cannot be in the Dire Maul Arena while the event is going on!");
           }
       }

       void OnLogout(Player * player)
       {
           if(m_PlayerGUID == 0)
               return;

           if(player->GetGUID() == m_PlayerGUID)
               hasLogged = true;
       }
};