They should be fine as long as you don't have a queen excluder on. They have enough food, anyway, so they won't starve.
What will likely happen, assuming that they are healthy, is that over the winter they will move up as they consume the honey. Wherever they get to by spring, they will start raising brood there. Then, as the honeyflow starts, they will fill it back in starting at the top.
Likely you will be able to get a lot of the honey back, just next summer. And they will make your super comb dark, but that isn't a big deal.
Speaking of queen excluders, I realized recently that I had left one on. I had to break in to the hive and the bees were partially through the queen excluder. It was in the 30's and they were REALLY mad that I had the nerve to disrupt them!!!. Probably almost AHB mad. If you have a QE you need to get it off, but you do NOT want to try to take honey off of the hive now if the bees are in the super.