[Swimmer]

If you were going to do over the rod that you are stripping guides from it can be a very touchy job. Since you are tossing the blank I wouldn't worry about it. A suggestion though and that is to practice on the broken blank as if it were going to be reused, and that way if you ever need to strip a blank in the future you'll be good to go.

I usually use a four inch wide razor scraper. They are sold for stripping wallpaper and other stuff. You can get a good strong grip with it though, so that the blade will run along the blank just under the epoxy covering the guides at an angle which makes quick work of the task. You can take just a little or as you gain more experience more by creating more inward pressure on the tool. Then lightly scrape or sand (600 grit, wet) the residue with a new blade until the blank is smooth.