Molly used mind magic to break drug addiction. The side effects were pretty terrible, but Molly was also totally untrained (and with Rosie, who Molly wasn't angry at, I think it was still a net gain in the long run). I'd think that an experienced mind-mage could at least do somewhat better ... certainly get a result that was better than having your head chopped off.
I always figured the reason the White Council didn't do this to remove black-magic addiction/corruption was because it would corrupt the person trying it (and because the Third and Fourth Laws mean that Council members don't develop the skills needed anyway).
But... with the Blackstaff, breaking the Laws doesn't corrupt you...
Now, Eb himself might not have the right talents for this sort of thing (his magic seems more oriented toward "really big explosions... although, Harry's is too, and from Ghost Story it seems he was able to get some basic competence in mind magic in like a year or two of practice...). But is it possible?