We were both feeling sick after our weekend bout with a flu bug, but went to spend some time with Brego in the round pen.  Tim did some speed control circling and some walking with Brego on the lead rope, then let Brego off the line.  This turned into a "Join Up" session, which was incredible to watch.  Tim tried his "invisible rope" with Brego.  At first, Brego began to walk beside Tim as he should, but suddenly bolted off.  Clearly, Brego did not want to follow Tim, and wanted to challenge him.  Brego ran round and round the pen in a huff, not looking at Tim.  He would turn and go the other way occasionally, but not look at Tim.  He got himself quite sweaty as he worked out his defiance and challenged Tim's leadership.  When he finally looked at Tim, Tim smiled and gave him the chance to come towards him.  He began to, but ran off again.  This happened a couple of times.  Tim would only smile if Brego looked at him eye-to-eye.  At one point he turned his butt to Tim again, only slightly.  I didn't even notice it, but Tim did, so Tim sent him off again.  Tim said that Brego can throw a hissy fit as much as he wants, and keep being uncomfortable by running, or he can look at Tim to find comfort there and be able to relax with Tim as the leader.  (Make the wrong thing hard (uncomfortable) and the right thing easy (comfortable).  Finally Brego softened, looked at Tim and came to him.  Then he followed Tim around the pen as if to say Tim could be the leader.  I think this whole thing took about 20 minutes, and Brego was sure sweaty.  It was very, very interesting to observe this, and especially since I just recently viewed a video of Monty Roberts using his Join Up technique.  Brego acted very similar to the horse in the video.