Originally Posted by drafts4ever
As for shutting down no he did not I know what he feels like when he shuts down and this was not anything like that. [/siz
That's good! Illustrates why this medium's not the best for particular advice, as you only have the words that are written to go off
In your first post, lacking in details about exactly where & why the horse gets stressed, it sounded to me like he just wasn't used to - or therefore up to going to shows, etc, because the whole affair stressed him out so much. But it seems your later posts are saying that's not the case & it's just his sep. Anxiety with the other horse? Also sounds like he gains confidence & security when you're riding?
Perhaps he's less sure of himself just with you when you're not onboard(which I find is opposite to most horses) so it would pay to work on your relationship with him on the ground, so he feels secure with you & you're a really Good Thing so you can distract & calm him better?