Outside of a loose track bar, bad ball joints are literally the next biggest reason why people get death wobble.
Thanks - will inspect those tonight.
As of now the poly bushings are being returned and I'll be installing those 2015 take-off CAs. At that point all that will remain in the DW clean up will be to inspect the ball joints - if they appear to need replacing, I can do that Saturday and hopefully this wobble/DW will be history. And, having just bought this used, I'll at least have peace of mind knowing where the maintenance stands.
Thanks for the advice so far. I'll chime back in on whether it all worked.