I don't see him as a psychopath. He's an untreated paedophile who is on the 18 month waiting list to start the sex offender treatment programme in prison, unlikely to complete it before automatic release on parole so he'll be expected to continue when he's on probation supervision for the remaing part of his sentence in the community. If he can't/won't do it in a group, he'll do it individually with his probation officer and a specialist worker. They will report to the MAPPA panel (Multi Agency Public Protection) and set reporting and monitoring conditions accordingly. He's going to find his movements and freedom heavily restricted if he displays the same irresponsible attitude to the people he has harmed, and the MAPPA will still monitor him under sex offender registration, even when his licence has ended.
I assume the letter he sent will already have been discussed with him in the governer's office, and the likely consequences laid out. His claim to be able to do what he wants in there is probably posturing - he appears to be dishing out sketches to curry favour - vulnerable prisoners like him lie to themselves as well as others in order to save face and/or avoid others' hostility. Privileges often get withdrawn for this type of behaviour. He should think about the impact on his wife, too - the home assessment visits prior to his release will be very uncomfortable for her to bear, when she learns how intrusive the authorities will have to be without his full cooperation. The days following release are frequently the times that spouses decide they can't live with sex offenders.
