Looks awesome. I sure hope you pull it off cuz it will be a dandy. Looks like there is not a whole lot of solid wood and will be mostly bark holding about 1/3 section together. That might let go when respun. I have used stretch wrap before to add an inward pressure trying to keep stuff from coming apart but nothing as big as that with so much bark in the wood where the bark looks like it will be some of the support. Not sure how well green ash holds its bark. Keeping the bark on hasn't gone so well for me on some woods that I let dry. I have had the best luck on green, start to finish.