So now that I have cantered Thunder and he has gotten more CONFIDENT in his riding, he seems to be EVEN MORE headstrong than he was before. I went to ride him yesterday because I hadn't been out there for a week (last time we rode was on a couple hour trail ride and we galloped on accident), I didn't lunge on the line, but let him stretch his legs in the arena. He didn't do much, acting kind of lazy so I decided to saddle him up and go since he wasn't all antsy and what not. He takes the bit right away now!! Yay! But anyway I got out there in the arena and was just going to do some relaxing work at the walk trot...work on turning and trot poles. We were just barely walking (no fire in his butt at all!) and he freakin CROW HOPPED! I didn't realize what he did until after and it was kind of funny but naughty at the same time. He's never done that before. I could barely get him into a walk he was so lazy, so I thought maybe I had to make him work hard after hopping like that, but he wouldn't go anywhere! Once I got him moving, towards the end we even cantered a few steps (first time in the arena). So he is getting more confident with me on him. I expected this to happen. So my question is, if acts naughty like that again and tests the waters to see if he can get me off, how do I discipline him if he won't move? My only thought now AFTER THE FACT is that I could have gotten off and lunged him. Also I did check for back pain, he was just being a snooty lazy butt.