I was merely putting forward a reaction to what I think is an exceptional and extraordinary situation.

Obviously, I don't know as much as you do about the intricacies of how materials are prepared, but it seems reasonable to assume that American Elk is prepared in a similar way to say other antler - like Sambar or Père David. It requires drying, assessing and prepping before it can be worked into appropriate scales. The word 'curing' might be inexact, if one wants to be pedantic

as it applies to horn material.
However, something is clearly not right with the material if it peels away with just washing and that suggests some manner of failure in the preparation, I think that's self-evident? Clearly, GEC will be able to comment on the OP's situation and offer an explanation and likely a remedy that will satisfy him.