I agree, that cloning would be against the force.... which in my opinion is why they wind up insane. Almost as if because they are abominations they are rejected by the force. But then it depends on how you approach the force... Is the Force like God, and Sith the Devil, or is the Force one entity with dark and light sides... If you play the God/Devil angle, then that explains why an abomination could receive power... and yes I know the OT leans more towards a light/darkside force, but what if that's simply different opinions within the faith? Obviously I'm being more complicated than the film should be, but the ideas could be there in a more simplified way.