I'm not quit sure how you will need to do these spurs you have if they have already dried out, but for future reference I always just freeze all my turkey legs until I get time to thaw them, cut them like you have above and below the spur, then use a razor blade or knife to get the skin from the bone, and finally use q-tips to clean the marrow from the center of the bone. Usually I push several q-tips all the way through to get it clean. But do be careful around the spur cap because it will come off. I leave about 1/8 inch of skin at the base of the spur so it will dry and keep the spur cap on. After this you can leave the leg bone part natural or paint it, whatever you like. Hope this helps you at some point.