So today I was out with Milo, in his corral where I feed him. I have him in a pasture with about 14 other horses that I don't own, so having a corral to feed him in is required if you don't want to feed the whole herd. ;)
For some respect training, I occasionally shoo him out of the corral while he's eating/before he's eating/after he's eating, because the leader eats first, so to speak. He usually skitters away, and then ambles around by the gate until I leave the corral. Today he was being stubborn, and when I shooed him out, he went about ten feet from me and gave a little buck/crowhop type of thing, then kept moving.
We haven't done much work this past week, or played this chase game in about three days, so I think its a little bit of a respect test, but it took me by surprise. He was far enough away that I was in no danger, his ears weren't pinned... But should I have gotten after him for it? If it was any closer to my space he would have had unholy hell unleashed on him.