First of all, congrats on what you've been able to accomplish so far.
Here are my concerns about what you've shared about this horse and your progress so far: even if you manage to make more progress with this horse, given the level of previous abuse and severity of the behavior, he will likely *always* be a one person horse and a professional ride only. And transitions to a new handler, while not as difficult as the one you've just been through, will likely always take time and patience. At some point you need to evaluate whether this is a realistic proposition, if rehabbing the horse to that point is really going to change his long term prospects.
Second, rearing is one thing, rearing and flipping over is entirely another. Rearing and flipping over means that the horse is so frightened and so paniced it no longer cares about it's own physical safety AT ALL. I will allow a horse *one* episode on the assumption that they misjudged their footing or balance, but they better get up smarter and more careful than they went down. A horse that rears and flips (more than that once, accidently) doesn't care about keeping its own skin intact will never truly be a safe riding horse, no matter the skill level of the rider.
I have a lot of respect and admiration for what you and your husband have done so far, but I question if your time and talents wouldn't be better spent on an animal with better long term prospects.
Last edited by maura; 11-03-2011 at 06:08 AM.