Poor boy glad your able to get the vet out tomorrow.. That's still pretty quick for a vet.. Here it would take a week or so unless the horse was literally dying right there and then.
How is he doing with his padded up hooves? Just wondering if maybe some foam pads or even some gamgee/cushion bandage padding might be more cushioning than just pads and nappies, it's a pretty experimental process when you've never seen anything like it before.
I don't know a whole lot about hooves and the way they are meant to look, but wow those definitely don't look normal at all.. Even the backs of the frogs look strange to me, as if the back of the frog hasn't been cut but the rest of it has. I hope your vet has some good advice tomorrow.
I wonder if some liniment would help his poor tightened tummy, I've not ever used it for that, but surely the tummy tucking would be him tightening his muscles up cause things hurt.
Poor guy he's certainly having a bit of a rough time of it