Try instituting an emergency manual electrical shutoff. There are multiple ways of accomplishing this.
1) Destroy the device.
-Complete submerging in water or some other polar liquid works well. A ground will be needed, so jump into the liquid as well. Complete smashing of the bad electrical object works well, but not guaranteed.
2) Go to the big electrical box and push all switches into the opposite direction.
-Every building has a big command post for electrical thingies. The opposite direction maneuver will deliever an instant shutdown to all things electrical within the building. Success is not always guaranteed due to faulty wiring possible.
3) Pull the plug.
-This is the hardest option of all and takes the most effort. Any electrical device no operating on battery power will connected to an umbilical cord. One will have to follow the cord to the source of birth and rip out the connection. Alternatively, scissors may work as well. No non-conducting scissors can be used due to the possibility for allergic reaction of the user.