Add this stock:

Code:
stock SpawnPlayerEX(playerid)
{
new Float:slx, Float:sly, Float:slz;
GetPlayerPos(playerid, slx, sly, slz);
SetPlayerPosEx(playerid, slx, sly, slz+5);
SpawnPlayer(playerid);
}

Now change everywhere in your gamemode from SpawnPlayer ==> SpawnPlayerEX