It might give JB the opportunity to confess - blaiming it all on his birth parents of course!
I don't see that as a possibility
If guilty,JB has no reason to confess. He on whole life so he won't get parole. Whilst there is any shred of doubt in his conviction ( assuming he's guilty ) he should keep quiet and continue his life in incarcerated comparative luxury.
If he were taken off whole life term,that changes things. If all other efforts were exhausted,he'd served his 30 years,there would be good reason to confess,even if your innocent. That way,however small,there is a hope of parole.
If he doesn't recognise his guilt,he'll stay in whatever. ( if he's innocent or guilty and all appeal avenues are exhausted )
IMO he's at the tipping point in his life.
Assuming he will not be successfully at appeal, one wonders if he is able to overturn the whole life term,and negotiate an exit to the satisfaction of all.
I am aware that would be very difficult,especially for the relations, but if you said to him that he'd be free aged 60, permanent Tag, 200 mile exclusion order and press gagged, I bet he'd take it.....