I don't understand why God would either expect something or not expect something regardless of a person or group's situation. If a person got lost in the arctic with some buddies and they all died, if he had no other food, he could either choose to eat them or die. In normal circumstances, cannibalism is not generally acceptable. The God you're describing would expect the man to choose starvation and death before eating his friends. The God I worship would expect the man to do his best to survive and this might include eating their dead bodies to stay alive and gain a better chance of surviving in the end.