And if you rehome Wally he may hurt himself in a panic. But of course he will be elsewhere and you won't see it.
he did very well in a barn situation with many other horses in the past so I would hope that he would do okay in that type of situation again if I rehomed him. Also, if I put a halter on him I can walk him out of sight of Blaze without too much resistance. It is when Blaze moves away from him that he has a panic attack.
OTOH if you rehome the mare you can use ACE on Wally for awhile and see if he settles.
I can promise you that my husband will not be willing to rehome Blaze. That is y I am trying to figure out what my other options are. The way that he sees it is that Blaze and Star are riding horses so they earn their keep. Since Wally can no longer be ridden, he sees him as lesser of a horse because of that. My husband would not be willing to give up a riding horse in order to keep one that cannot be ridden.
Last but not least if Wally is 22 and unsound you can also choose to put him down.
I know that this is also an option but it would be an absolute last resort for me. I would much rather try to find somewhere where Wally can live out the remainder of his days (or at least a few more years) in happy retirement. Yes, he is very lame right now from pacing the fence next to Blaze, but before then he was actually doing pretty good and I would throw a halter on him and take him for walks around the neighborhood when I had the chance.
You can make the walls of the stalls solid so Wally cannot see Star.. or so none of the horses can see each other.
unfortunately, this is not an option. I cannot afford to redo the stalls right now. And I worry that if I wait until I can that Star is going to be severely injured before then.
I am already rotating the turnouts. The problem is that Wally can reach over the fence and get to Star whether I have him in his stall or the small arena/pen that we have. The way that they are put together has the stalls and pen all sharing fencelines. I now have to carry a riding crop to shoo Wally away with when I ride Star in the pen because any time I ride Star near the shared fenceline Wally will charge the fence to bite at Star.
Have individual paddocks off each stall.
we don't currently have the money to change the setup that we have. Even if we did there is no room to move or add anything where we keep the horses.
Is there anything else I can do to hopefully fix the behavior itself since I can't change the current stall/pen setup? I tried separating Wally and Blaze about a week ago by tying them up on opposite sides of the property to see what they would do. Blaze couldnt care less if Wally existed or not but Wally was still whinnying to Blaze and trying to figure out how to get to her 5 hours later. Our property is just not big enough to have both horses separated where Wally cannot still see Blaze.