I'm not an expert on ACF or any frogs for that matter, but it's a possibility that they are in fact worms.

A protozoan infection in the skin can cause excess shedding and overproduction of slime/mucus. Take a look at this page: Disease and Illness in Detail

EDIT: This page also goes into a lot of detail about parasitic/protozoan infections under the heading "Parasites": http://www.merckmanuals.com/vet/exot...mphibians.html

I seem to recall your ACF was eating fish? It's a possibility that the fish was infected with parasites and passed them on to your frog. Poor tank hygiene/conditions, like you were experiencing, also contribute to parasite infestation/infection.