recruit, your behaviour was exemplary! you showed good will and great sportsmanship even in the face of this unspeakable evil! as you were!
concerning the feature suggestion:
im afraid what you are suggesting would be just as exploitable. remember that moves can be played while a game is paused. if a pause can only be undone in mutual agreement, then that would effectively render all time-controlls meaningless. at the very least you would have to apply the same condition to starting a pause.
what would make more sense for situations like these is an entirely different feature, making it possible to delay play to another specific point in time at which the game will also resume automatically even if noone shows up :). sounds very useful afaic, especially for longer live settings.
PS: i think that is about what @aten meant as well.