When I was a small child my great Grandmother (Cheyenne Indian) would tell me of the days of old when the warriors when faced with an angry bear would talk to it and sing to it in a soothing voice, and it would not harm the warriors and would let them back away without the bear charging them. My Great Grandmother said it, I believe it to be true. But a fast dance might work or it might agitate the bear even more. I believe I would try the Cheyenne method first.