Bad legs? That's surprising. From what I can see, his legs look very nice indeed. He has short canons, a nice long gaskin, clean hocks.
He is very butt high, true. The way he has a dip in front of the withers, then a kind of cresty neck in front of that makes me think he may spend some time moving wiht his head pulled back into his neck, scruntched up and breaking at the third vertebrae, with the lower neck dipping lower still.