Yes, once you have ruled out any health issues, time to go to work. Trail would be wonderful once you feel safe. If you stop riding him when he acts up you are rewarding him and he now knows how to control the situation, though if you continue (if you feel safe), flex him and do not allow him to stop when he acts unacceptable. If you do stop riding him, take him to the round pen and let him know his work day is not over though do allow him to rest when he is settling doww and reward him when his actions are acceptable. Hope this helps. p.s. check his bit too..sometimes a little thing like a bit can make a huge difference. Keep us posted…………..