Max worked very hard today and was extremely good. His back ups have become much more compliant, and the two of us have negotiated an agreement about straightness. When he backs up and his hindquarters get crooked, he would prefer that I straighten his front end instead of his back end. That way, he can keep the weight off his forehand while backing up. And hey, who am I to argue? I'm going with it. Here is some more video of him working on hindquarter yields around some figure 8's.