Scylla, everything I’ve read indicates that Reeve took his riding very seriously. He rode 5-6 days a week and took 3 or more lessons a week. He was not overfaced nor unsucessful at his level (Training level Eventing). His horse was not a “finely tuned machine” about to go to the olympics or anything. Of course it was well bred and well trained. Only an idiot doesn’t buy the best they can afford. Your implication that he handed off a horse to a groom is insulting to eventers.
I have also spoken with some who saw the accident. The horse backed off the fence (translation: started slowing down) for an unknown reason. The fence was a very straighforward vertical, not the first element of a combination. You actually don’t see combinations on Training level courses. Some observers thought the horse was looking at a depression/ditch on the other side of the fence, but its hard to say. This depression (or swale as they are known) was NOT considered an onstacle and not flagged as such. To say it was a combination is just wrong.
He did not "pull the reins and “lift his legs” (whatever that means). What happened is that he jumped ahead, which means he began to move his body towards the jump before the horse did. In other words he was ahead of the motion, not behind it. As all eventers know, riding behind the motion is considered the “defensive seat” and is CONSIDERABLY safer than getting ahead. (Which is a not uncommon fault, and a mistake even the best make sometimes) when the horse stopped, he went forward over its shoulder. Part of the problem was simply his build, which was top-heavy and that does tend to pitch you forward. His hands tangled in the reins, preventing him from breaking his fall. He did “the lawn dart” head first into the dirt. The weight of his body compressed his spine. His surgeons said