Alvin, my 23 year old 14.0 pony gelding, is sometimes skittish bareback. I rode him bareback the other day and he kept bolting and shying. This isn't usual because he is mostly scared of a llama across the street and my dog. Finally he was so skittish he bolted and swerved like a reining horse and threw me! Now I have a broken arm and no riding. It was windy and I thought he was afraid or having a off day. If not, any ideas?