Interesting. Though I'm not sure it's much different than an ogre-infested cave.. they just happened to be in the same area and not kill each other. Lore, and previous games, don't suggest that someone in beast form has much in the way of cognitive thinking, even with Hircine's Ring. They pack up because they were in the same area and didn't kill each other, or because they were following Hircine's will. I'm still not keen on believing that most lycanthropes would seek each other out, let alone be comfortable being around each other, while in normal form.
"After you put Hircine's ring on, you will turn into a werewolf for around six hours. You won't suffer from bloodlust"
I mena, if vampires hang out in clans, why not werewolves? The way I see it, Hircine has control over all Lycanthropes(As we have seen in Bloodmoon), but when his divine presence is gone, some Lycanthropes go to a lesser commander or leader, such as a "Alpha" pack leader sort of thing. Like wolves in real life do.