J-Lu, first of all, you are a real trooper for sticking with a horse like this. I’ve dealt with a few, and I just don’t have the patience or courage (especially as I get older) to put up with it. There are too many horses out there who are willing, compliant, safe partners for me to invest the blood, sweat, and tears (and money) into one like yours. So, big kudos to you for keeping with him and trying to make him a better horse.
I have to say though, that when I watched that video of the NH trainer working with him, it all made sense. Not only was that guy totally misreading the horse and doing exercises with it that it was not in ANY way mentally ready for, apparently you don’t see that either. That wasn’t a video of a horse that is afraid of flags. That was a video of a human TEACHING a horse to be afraid of flags (and cinches, and…people).
Your horse doesn’t trust people to keep him safe, and that video was probably just 8 minutes of his life that confirmed what was probably already present in his mind from birth: “People do stuff that scares me.” He doesn’t trust that NH trainer…at least not in that 8 minutes, and horses live in the present, we have to train what’s standing there in front of us, not what we had in front of us yesterday or a week ago.
You said in one post you are not afraid of him. Yet you often think about whether you want to risk getting sent to the hospital by him that day when you ride. These two things don’t add up. And frankly, you have every right to be afraid of him. You don’t trust him. And that feeling is mutual.
That’s where you have to start. And I know he has a history of a lot of time, energy, and money being invested in him, and you are truly to be commended for that. But until he trusts you (and people in general), you won’t be able to trust him.
Other than that, I’d say to stop referring to the gate of your arena as “The Gate of Doom” both on here an in your own mind. It’s just a gate. Don’t play into your horse’s anxiety by developing negative associations with things he has an aversion too. And, as hard as it is, stop thinking of him as a special snowflake who has to be treated differently. This is a horse who needs his routine and world to be upset often so that he can learn to cope. It’s not going to be comfortable or easy for everyone, but he CAN learn it. He needs to trust and have confidence in the people who are working with him to gain those coping skills.
I hope this doesn’t come across as critical. It probably does, but I see and understand your frustration. And I really do admire you for all of your effort and care for this horse. I hope you continue to find success with him.