It’s been years since I was a competitor in distance riding, but my daughter is an upper level Eventer, and they also have similar problems if they part company from their horse on the Cross Country course.
The first time this happened to Chris, was years ago (like, about 1990) in Texas on the Intermediate Course (that’s next to the highest Eventing level … big fences, long, fast courses) between fences. Her purebred Arab hit a shallow gopher hole in sandy soil at a gallop and both horse and rider sumersaulted. Horse got up, trotted a few feet, then turned and came back to her. We thought it was because of the horse/rider bond.
Second time, about 8 years later in Kansas, her Arab/Saddlebred went down on an icy bridge (it had been heavily sanded, but something happened) and horse and rider parted company. Now, she didn’t have that close a bond with this horse but he, too, got up, trotted a few steps, turned and came back.
It finally dawned on us that Chris had unconsciously taught all her horses to either ground tie or follow her whenever they were tacked up and she was not in the saddle. It happened because, when schooling the show jumping phase at home, she usually didn’t have anyone to help her reset fences when a bar was down. She would dismount, do a slight check on the reins (which she often left around the horses neck) and use the command ‘stay’ just like with a dog. As the horse learned, she gradually stopped using both the rein signal and voice sinals and they’d stay or follow her (those who are not quite as willing to stay put will follow) as soon as she left the saddle. We found that virtually every horse she rode by herself would do this … she had done the same thing with all of them simply because she didn’t want to have to go tie them up while she reset a single fence.
It paid off again about 18 months ago when a young, lower level horse (another Arab) went down at a fence on Cross Country in competition in the pouring rain (hind feet slipped as he prepared to take off). Again, this horse got up and came right back to her, and he was much less experienced than the others. He was not hurt (none of them were) but, of course was required to retire from the competition (bummmer, cause he was winning) … it still was much more pleasant NOT to have to chase him.
Having them stop with or follow their dismounted rider is also great when she’s out on XC schooling OTHER riders. Now she knows she can dismount to help a student, if necessary, and her horse will stay right with her the minute it feels her leave the saddle. Our horses are also well schooled in lunging and voice commands, but what if you’re unable to speak?
As for spooking … Chris has never gone off a spooking horse, knock on wood and keeping fingers crossed. She did go off a big Anglo-Arab in a cross country clinic at an Intermediate fence when the approach to the fence was not quite right and the horse knew it… same thing happened though, horse stopped the minute he felt her leave the saddle (got it on video).
Most of ours are Arabs or Arab crosses so if they do happen to spook, it’s the type spook that is jumping sideways, slamming on the brakes, or slamming on the brakes and spinning (that’s the one that regularly looses ME), then curiously studying whatever the cause was, but they’re generally not inclined to a blind panic runaway. Also agree with the flying dismount causing more injuries than it prevents, seen it happen too often. You’re safer staying on … just duck the trees.