With all of the outcry over the resistance change, I fully expect Larian to fix at least the Zombie talent so that it isn't a 120% drawback. I wouldn't be surprised if they changed the max resistances back up (to at least 100%) as well.
If this issue does get re-patched in the future, then removing this mod's effect is as simple as deleting the UncappedResistances.txt file from the mod and reloading the game (a more thorough uninstall would involve save game editing to make the game think the mod was never in a save game at all).
