LOL. I like how you put me on the spot riosdad, is this so you can bash me some more? First of all, in my experience, horses don't just suddenly become barn sour. Things lead up to the behaviour. Most horses are followers, not leaders, they want to have a leader. If you don't take the time to earn there respect then why should they trust in you to keep them safe in the big scary world? Horses will often test their limits, and if they succeed in refusing to leave the property once, then chances are high they will provide a battle every single time you try to leave the property. Before you know it, you have a barn sour horse on your hands. More often than not we are responsible for creating this in the first place. So how would I handle this particular horse? And no Riosdad, I wouldnt use tools..lol...just to amuse you. There is usually two reasons a horse is barn sour. Either he doesnt see you as the alpha or he is just flat out stubborn and gotten away with too much leading up to this. This doesnt mean just undersaddle either. I wouldnt be attempting to ride this horse out knowing he does this because why would I want to put myself in that position and set the horse up for failure? I would be removing outside riding altogether and going back to the basics on the ground to establish a bond and have the horse realize that I am the one that is in control always, in any situation. Earning a horse's respect is far easier on the ground than the back of a horse, not to mention far less dangerous. Again, no spurs or whips! Just knowledge *gasp* wow eh?
Some horses just simpy cannot be broke of this habit if its that extreme so she may have made the right decision selling him if she doesnt have the experience to fix it. No barn sour case is an easy fix, its not one of those things you can just hop on someone horse and he will listen, well maybe to you riosdad, because you wear spurs..lol..
I would honestly be afraid if you were to help this horse riosdad, simply because this isnt a horse you could wear spurs on, you would just multiply the problem times a million. Im not saying that if my horse was to ever run home on me that I would just pack er in and put him away, there is steps that need to be taken so he knows that was unacceptable but getting on him isnt always an option if the rider has got hurt.