Hey, it is an addiction. If that was mine and I really wanted to save it, do anything to save it even if it broke again because at least you tried, I would get a hickory backing that was pretty thick 1/8 or 2/8" (really whatever I thought was sufficient) and I would back it. It is the back that is broken, so make a new back! Of course you would have to rip the tape off and sand the back and wait for the glue, etc. But I bet it would make you feel better and more interested in this. Other guys may say it's done, but I think as long as it is somewhat together, I could make something out of it! After this I say go to staves if they are available. It may be a ton of work, but the back is flat so that helps with gluing surfaces. Try it if you want. Hope that makes you feel better!!