Nice rings,you could cut it and billet it together but I have straightend some out at least that bad if not worse.I would work it down to rough bow dimension's and seal it all.I would steam it the first time to get most of the twist out and then heat it to tweak out the rest.Osage bents like butter when heated.Just go a little passed what you want cause it will loose some of it.With that much I would do it in 2/3 maybe even 4 session's.Good luck.
Pappy