Hm...
On piston pressurized acft I have flown, there are cabin pres. dump handles. What about dumping the pressure. All terrorists need O2 or air to bread. So do pax, but having to sit still you can't run around cutting peoples troughts.
I know this sounds a little strange, but would this work? Would be nice to be able to pick up the exhausted terrorists with the cabintrolley during the descent!