Darn, I wish I were closer- I have a beautiful trailer.
Check and see if there is a horse rescue nearby that can trailer him for you.
I know, I really kick myself for having sold my trailer a few months back. I should have waited until I got a new one before selling the old one!
As it is, the person who is going to help me on Thursday is from the Shadarobah Horse Rescue, which is just down the road from me. I'm just hoping I can find something sooner.
I would say- if this gelding has honestly been ridden and driven, and he is acting this way- he has been mistreated in some way. I really haven't found where a horse went from well broke to near feral like that. Skittish, sure- but since he was better with you than with his owner, I would say something has happened that was very unpleasant. That, or he has an underlying health problem.
Its going to take work- but I have to say half the work will be on your horses- who are going to have to teach him to be in a herd.
That's my thoughts too. I don't get the impression these people were the ones who might have abused him, because their other horse if friendly and walks right up to you, isn't shy at all. But they haven't helped him either. He is at least used to being around another horse, because they also have that an older arab mare. However being with a "herd" is different than being with one other horse. However I won't be turning him out on my pasture for some time at this point. I'll start of stalling him and hand walking him during his QT anyways, then turn-out during the day in my side yard, and then maybe in just my first, smallest pasture, with just one other horse that is less likely to bully him, maybe Finn or Misty. I don't want to just throw him out on my opened up big pastures when he is so scared and difficult to catch, even if I hadn't needed to keep him separate anyways.
Oh, forgot to mention, he is bigger than the impression they gave me over the phone. I'd guess him to be about 13.2 hh, he's a good bit taller than my Misty