Ya, that happened to me on my Crispi's. The entire thing peeled off and inside of both soles was just powder, including the heels. Not sure why I didn't feel that before I discovered it, but both soles came off my boots. I went to a local cobbler and he put on new Vibram soles for $80.
Welcome to the club. Briksdal sf sole loosened up on the day 3 on very remote hunt. Gorilla taped and gear glue to save my mtn tires. Then they started to leak like a bugger. I had only wore them 3 to 4 hours before the hunt to see how they felt.