Brad, it took 40 years for the wood to warp this much and it would probably take another 40 to warp it back. You probably don't want to wait that long. Without seeing the piece, I am guessing but it might be possible for a cabinetmaker to replace the warped parts. This depends on the jointery methos used and the condition of the rest of the piece. At the same time, you could easily spend more than the piece was worth to fix it.