you can actually spawn it this way and use setuntidata to control the direction.
monster "payon",159,215,"Fur Seal",1317,1,strnpcinfo(3)+"::OnKilled";
setunitdata $@mobid[0], UMOB_LOOKDIR, DIR_EAST;
monster "payon",159,213,"Fur Seal",1317,1,strnpcinfo(3)+"::OnKilled";
setunitdata $@mobid[0], UMOB_LOOKDIR, DIR_EAST;
monster "payon",152,215,"Fur Seal",1317,1,strnpcinfo(3)+"::OnKilled";
setunitdata $@mobid[0], UMOB_LOOKDIR, DIR_WEST;
monster "payon",152,213,"Fur Seal",1317,1,strnpcinfo(3)+"::OnKilled";
setunitdata $@mobid[0], UMOB_LOOKDIR, DIR_WEST;