The CCRC are going to be told to scrap the real possibility test. It's nonsense, so can completely understand why it would get scrapped. Regarding the AGA theory for the burns. I have no idea as to whether it is correct. The new images are certainly interesting.
A lot of people are interested in trying to piece together in the right order (an extremely difficult task) what actually happened. This does not interest you because you take a different line of approach to the case. It's a broad church.
It's of no use simply to claim -even if it made sense!- that the Aga was responsible for making marks/burns on Nevill's back. Nothing just happens. Everything has a back story. Nevill's wounds were horrendous and bloody. Where was the blood evidence on the Aga? If you're saying that he wasn't injured when he was placed there, exactly what are you suggesting? There are one or two alternatives available. A) Police shot him, either prior to, or after placing him there, but why would they move him back to the chair? B) Sheila snuck in and shot him whilst their backs were turned. At this stage we know it couldn't have been JB because he was outside with the police. Besides which, it's been claimed that an uninjured, but concussed Nevill regained consciousness and managed to phone him. A feasible back story is required before the claim can make any sense.