My horse is back in work after being turned away for 3 months because of a sore back. I rebacked him once his back was better and he was understandably anxious about being sat on again, he did nothing, but was visibly shaking the first time someone leant across him. We are now at the stage of hacking and schooling in walk and trot, and getting his confidence back. The only real problem thats causing me worry is when I ask him to halt in the school. He will stand for a few seconds, then try to walk on, if not allowed to he can start to paw the ground, and it feels like he lightens on the forehand too, as if he's going to go up. Now he is a good boy, seriously good, it doesnt generally enter his head to play up, but when his back was sore he actually went vertical with me, and did a few bounces on his front legs previous to that. I am very anxious that he does not go up again, and basically want to know if anybody can advise me how I can get him to relax in halt and accept the restriction of not being able to go forward when he wants to. Im so nervous about him rearing (frightened the bejezus out of me when he went vertical ) and maybe am not being as firm with him as I should be. Please help! Thanks x