alt-f4 doesn't seem to work, neither does ctrl-alt-del becouse the task manager won't show due to demigod hogging the screen.
only fix possible in this situation is a hard reboot (restarting psupplyunit)
i found a (temp) fix after a bit of googlin' so next time if you alt-tab or for whichever reason demigod hangs on you. use this fix
it is by using a program called "superF4"
direct link to the -> program <-
basically when this happens again, just press ctrl-alt-f4
and you can restart demigod without the hassle of killing your powersupply =p