My horse has what looks to be a sheared heel. I've learned that horses that toe out are prone to this, and on top of that, farrier leaves the inside heel higher and the outside toe higher to reduce the toeing out (!!!). Which makes it that the shearing heel is trimmed leaving a taller heel which adds to the sheared heel in my understanding.
This pic was taken after I had lowered that heel some , the farrier had left it higher than it is in that pic.
Also, can this move the coffin bone within the hoof capsule?
Can you move the heel bulbs independently of each other? They don't look obviously sheared to me, just imbalanced. *But so saying, I've had very little experience of sheared heels, only had one client who's horse was 'sheared' due to an injury.
A farrier who believes they can fix conformational issues that are normal for that horse, is not a farrier.
It really helps to know the horse over a lifetime. But, if one does not, then a farrier who tries and has no progress in attempt after attempt, then they should recognize the horse needs to toe out or in or whatever to feel comfortable and leave it alone.
I tried to force a key in a lock and it broke off, inside the lock - bummer.