This is me being an armchair "bird lawyer" without actual expertise, but it seems to me that his threatening people with a gun for them to stay in a room for a few minutes while he searched the place for the goods they thought stolen from him...

... well, it's not good. But is it kidnapping? My common sense tells me by then the system was biased against him. Mob justice, therefore, even if not from a wild, tar-and-feather variety.