I've left it at a shop, but I plan to do just that if the shop guy doesn't manage- I can justify spending more time on it than he can. I actually built my first front wheel a few weeks ago, although that was starting with a straight rim.
As predicted, the shop couldn't do anything with it. I've now removed all the spokes, which came out really nicely, and will have a go at sorting the rim out at some point.
91 Salsa A La Carte (Nukeproof / XT / M231 etc etc)
