I'm new to bow building but I'd say that's a bit much. I had some pecan that the bark wasn't removed on when wet and it was a bear to get off. I got most of it off with a drawknife and scraper but the inner bark was really thick and tough to get off with a scraper. I took a wet cloth and layed it on the back to moisten up the inner bark layer. When it was damp, I used a brass wire brush in my drill and ground it off, for lack of a better term. The brush didn't seem to damage the sapwood but was able to get into those tight spots really well. Just a thought.
Aaron