Hey Ed! Sorry to hear about your troubles. IDK if you listen to the Fine Woodworking podcast, but Mike Peckovich recently addressed this exact issue, and his answer sounded to me a lot like your thoughts.
My recollection is that he said re-sawing 4/4 material is a train wreck of cup/twist/bow/etc, and it’s simply a non-starter for him. He acknowledged with some exceptionally well-behaved stock it is absolutely possible, or with less-than-perfectly-behaved stock there are some tricks with moisture and stickering and weights and etc, etc, that can be employed, but on average, he doesn’t look to 4/4 material.
He said to get thin slices that don’t go crazy, start with properly-dried, 8/4 stock (or thicker), and take your slices from opposing sides. Obviously the outsides will be much closer to (or at) equilibrium moisture content, and in his experience, there is much greater stability in the resulting boards.
It was, I think, in one of the most recent 2 episodes. I’d start with episode STL268 (I won’t include the Youtube link because this site often mis-identifies replies as containing spam if you simply link to other woodworking content, but just go to the Fine Woodworking channel on YT and search for STL268) and if it’s not there, try STL269. Get the info straight from the source in case I’m mis-remembering something.