ePUBee is a 1 step removal tool for Epub and PDF encumbered by Adobe Adept DRM. Does the file require that you use Adobe DE to download it? Then this is the app to free it from DRM.
I haven't tried it yet, but it looks like this is just a 1 step process. That's great; the other techniques I had been using are not simple.
Folks, removing DRM is simply being prudent. It's called protecting yourself from unfortunate accidents (dead computer, failed ebookstores, etc). Everyone should do it.