I play with this feature enabled and noticed that you don't have to die at all.
Even after all you characters are unconscious there is a few seconds "gap" that is long enough for you to get to options screen and quit to main menu.
You can load your save and try again. There should be no option to quit a game during fight. I don't know whether it's possible but this would fix that exploit. Great game
Edited by Sagregas, 02 April 2015 - 09:02 AM.