Id say from looks of hoof in photo your farrier won't fix a darn thing. Sorry that farrier wouldn't be touching my horses feet.
Been through 5 crappy work or issues they just never fix. Don't care what you tell him he isn't going to see it. Most don't if he's let this get that bad that tells me he can't and won't fix anything.
Been there done that 5 times now am going on number 6 will see what he does .. if not good he won't be coming back.