If you go to a sports goods store and check out wrist protection for hockey players, skateboarders or rollerblades, you'll find they contain a bent piece of plastic very much like "the secret" & "the answer".

By design, these devices use the plastic brace on the inside of the hand (to protect the wrist from overextending), but it should be possible to use the brace with a couple of velcro straps or elastic bands, or perhaps even mount it "inside out" and reuse the "glove" thingy ...