Our Montana elk outfitter had this happen. He and the cook packed out of the Bob to pick us up in Ovando and pack us to camp. They left their wrangler in camp by himself to mind the livestock. We ride into camp 3 days later. Here comes this wreck of a human - the wrangler - crying and screaming at us to lock and load. I thought he'd lost his mind - or had a stash of 'something' in camp.
Turns out, as soon as the outfitter left camp, the Griz moved in to take over. That bear terrorized the wrangler for 3 days straight - like hourly. When the bear heard our approach, it left camp. The tents were torn up, the cook tent was destroyed, the horses and mules were scratched up. It was a mess. The poor wrangler hadn't had any food or sleep for the duration. He was a mess. Took us 3 more days to get things straightened out. Then the Griz came back in the same attack mode. We lost 2 more days of hunting time just being in protect and survive mode. Griz finally pushed it a way bit too far. Killed one of the horses and started to chase the guide. One round of my 338-06 solved the problem. Lost the rest of the hunt to pack out, and get fish and game back to camp after we reported the kill and 'investigate'. They looked at the destruction in camp, took pictures of the dead horse and listened to the wrangler's story. They thanked us for a good kill and left camp the next day. End of elk hunt. Not good.