Re: "He was found not guilty, therefore he is innocent"
There is also the very real possibility that he will at some point realise that he can simply walk away from all of this, and build a new life under a new identity. Granted he can still be identified via fingerprints, but having had one brush with the Thought Police, I reckon he'll live out an entirely blameless life just to stay out of reach of Plod.
This is what happens when you go outside Common Law, which is what this effectively does.