Cjboy, no need to get so snippy about someone else's opinion, is there? I hate the word 'rehabilitate', by the way. Rehabilitation is for when you've gone off the rails with crime, drink, or drugs - re-training, sure, but not rehab. Okay, to your point: he's still fallen enough times jumping, which you are adamant he can do. You say he wouldn't make a hack, but how would you know unless you've taken him off his high-energy feeds and typical race yard regime, let him down, and begun riding, as against racing, schooling? Do you think the word 'hack' implies some dozy old nag which can barely pick its feet up? There are plenty of energetic rides for the more experienced rider from out of the racing world, as I am sure you know, if you've been involved with retraining them.
You tell me what you'd do with him, since you appear to be strongly connected to him, if he comes to grief again. Personally, I think he's a lovely big animal who I wish well, as I do every horse in the world, even those who have 'difficult' temperaments, since those are pretty much man-made. What are your plans for the horse when his jumping days are over? If you think he's impossible to be turned over to an experienced rider to redevelop, then I assume it would be to just put him down?
BW: yes, agree with that - one more RR and he should be out, and not taking up a valuable entry space in a race.