I know it's not easy to hear but horses have a way of making a monkey out of just about anyone - or should I say the people selling them have that way! And I don't want to be mean at all, but you posted these pics and I really AM worried for your getting a decent horse.
We can ALL - ALWAYS use some help spotting these things. We can ALL always use a vet exam to detect things. We can ALL always use someone more experienced along.
And we can ALL - ALL OF US - GET FOOLED. I know people who have been buying and selling hundreds of horses a year for decades and they STILL get vet exams and ask for help at times.
That is not a matter of how that horse is standing.
The foot is destroyed. And it's been left that way a very, very long time. Most likely foundered and the sole dropped, possibly due to an untreated injury to the OTHER leg, so the foot that looks bad now, foundered due to bearing too much of the weight the other foot should be holding up. That can be how it starts, or just, one foot foundered worse than the other. Then, the twist comes from the animal attempting to try and get some weight off the foundered foot.
This is not a new sight - I've seen this before - this is why I get so frisky and erudite when someone talks about 'gee, horses don't really require that much knowledge, care and attention'.
The first thing I look at whenever I look at any horse is his feet.
All 4 of them.
They need to be normal, weight bearing and pretty much match.
And if anyone sends me a picture with a horse standing in grass or any sort of picture where I can't see all 4 feet, they can send me another picture or I'm done. That's the oldest trick in the book, stand Ole Hookfoot up in the long grass and take a picture.
Foot, foot foot, that's what a horse lives or dies on. No foot, no horse.
And no foot, no buy horsie.
