that's great; I have a strong image of the bears handling that quite well, without any help from enforcement.
Squaw is large enough that you can avoid certain crowds by hanging at certain lifts. One of the big popular lifts so attracts the fair weather crowd that it drives you away eventually.
There is definitely hiking allowed on our hill all year round and many do. I'm not among them - I'm just not in shape and may never be due to the knee cap I broke a few years back. Of course, some of the best terrain is still officially "closed" even after ski season because of grizzly habitat, but I don't know who is there to police that off season. There are permitted "routes" up the hill until 4/24, after that anything goes.