I have recently been working with a morgan (not mine, but I am riding him because no one else does and have taken on responsibility) that was originally trained to be a cart horse, although also to be ridden. He hasn't been ridden in quite a while (a year? More?) and is out of shape. He is also very herdbound, but some work with him has made that less of an issue. I am working on longing him, trying to assert my dominance, and have absolutely been unable to longe headed to my right (a clockwise circle). He longes beautifully in the other direction, even though I struggle to keep him cantering because he is so out of shape. However, when I ask him to turn, he panics. He would rather run into the whip, snapping right in front of his face, then turn to the right. I have walked around the circle with him (he does not like me leading him from his right) and on the ground, not longing, he is fine, but if I back away from him AT ALL and ask him to move right he panics. Any ideas?