Originally Posted by TimberRidgeRanch
CIN have you had his back checked for soreness? That head tossing looks like he's hurting somewhere he only really does it at the trot a little at the canter. Maybe he's just a bit sore either in his back or his neck. Maybe have a chiropractor work on him then see how he does.
I know you said you were not looking for a critic. Just a thought as to maybe more is going on then him just not liking dressage.
Over the past two years he has been poked, prodded stretched and tested by various professionals including chiros, vets,etc. He does have sporatic sacroilliac stiffness and he ihas had prior issues with back sensitivity leading to a lot of saddle firings etc. Both things have been well under control for a while by our vet.
Thank you for suggesting to check those things,I know a lot of people don't look there when their horse is a butt head.