I know what you mean, one of mine is normal and spongy and the other is as flat as a pancake (soundz like I'm talking about my boobs!!)
The farrier came to re-shoe and sed normal as wet ground and they will grow again - I was worried incase the blood would not pump up leg etc as nothing to shock absorb on the ground?
But he put my mind at rest - will be better when we are drier.