That is just about what I had in mind. Only I think mine would be mostly sapwood with a tiny bit of heart - maybe. I have read that the sapwood makes a fine bow.
Did you apply any heat? My stave is twisted, but the bark and inner bark came right off, and it is very nice and clean... just twisted.
I have read that ERC does not respond to heat well, but I have not read of anyone actually doing it, other than to put a little bend at the ends. Any thoughts?