REALLY need to see a picture...the only thing I can think of that can cause scales to raise up to the point of falling off is Scaley leg mites. Is there gunk under the scales making them pull away from the leg?
Thats one heck of a case of scaley leg mites! The BEST wayu to get rid of them: scrape all the gunk out from under the scales [ you can use a nail file or a paring knife] and cover the feet in either vaseline or NuStock and in a few days scapre again what has loosened up and recover. Will take awhile for the skin and scales to recooperate from this.