I haven't seen the movie and I'll not see it: I dislike cinema. But, about the "flash freezing", and the fact of the mammoths almost istantly frozen found in Siberia, there's another explanation, that Albert Einstein himself liked a lot: the theory of Hapgood about Earth Crust Displacement ( http://www.skrause.org/writing/papers/hapgood_and_ecd.shtml#ECD ). In short, Hapgood thought that, towards the end of the last Ice Age, the mass and the weight of the Ice covering most of Northern continents, being asymmetrical, alongside with the Earth rotation, caused the whole crust to "slip" thanks to the "imbalance", in a way that's been stated: "much as the skin of an orange, if it were loose, might shift over the inner part of the orange all in one piece."