Originally Posted by MIEventer
I stand by my post.
I am far less experienced and accomplished than most of the riders on this board, but MIE's post really seems spot on. Sometimes at higher levels of riding (or any skilled activity) it is easy to see a problem as an isolated event. Since I am a beginner and focusing so much on basics, maybe it is easier for me to see that this is a basic problem, not simply a "bolts in XC" problem.
If he is hard to slow at the canter, then it sounds like there are other instances where he isn't listening to you. I think MIE's point about rethinking the approach to riding all together (focusing on his hind and really listening to your seat) makes great sense. I also agree with whoever said adreneline brings out the holes in training. Maybe the bolting seems like the biggest problem, but it is no doubt an accumulation of smaller problems that come together when he is unconfident. I think bringing things back several steps in training will help him have more confidence and listen to you instead of him just reacting to his fear.
But as I said, I am a beginner so if nothing I said makes sense feel free to disregard!!