Some interesting remarks on this thread. Just some thoughts. First of all, it isn't in the logs regarding a murder and a suicide. it's in Neil Davidson's CoLP interview transcript. However, he does impart that he was allegedly confused as to whether the message referred to one body or two bodies. Personally I do not buy the generic version police statements tallying around a mistaken identity. Therefore the logs imply to me that there were indeed two bodies, one female and one male.
If we take the line that police believed JB was guilty and this is why they framed him - I would be wary of a certain set of officers trying to fall back on that defence. I dont know where the suggestion first originated, but it was expressed repeatedly a while ago that DS Stan Jones wasn't told the truth about what had happened that morning until several years later or at least a good while later. It has also been expressed on many occasions, most recently by Bambergate that there in effect two sets of officers. One set involved in the actual raid, who dont feel they should take responsibility for the later instructions of their superiors... and the superiors themselves, who gave the TFG those instructions.
As for some of the other officers, I wouldn't trust somebody like Bob Miller or Ron Cook as far as I could spit them. Therefore why should I believe if they or similar colleagues try to claim they framed somebody purely because he was guilty? This was the line given to Ray Hollingsworth a few years ago when he spoke with some Essex Police officers. However if we look at the situation at the actual time in 1985, a senior officer reviewed the case evidence as late as early September and his findings where that the evidence pointed towards Sheila as having been culpable for the killings, effectively backing Taff Jones's stance to that date. this does not match up with EP genuinely believing in JB's guilt. Clearly one set of officers worked towards claiming JB was culpable (using fair means or foul) while another set refused to play ball.
Possibly a tenuous link but there is the Anecdote from the late Campion about KMcK boasting at the post conviction party re JB having been falsely sent down.
Also, if nothing went wrong with the TFG operation, why where a team of 'informatives' brought in to re-enact the operation and learn? What could be learned by re-enacting a raid that had taken place on a silent farmhouse with all occupants already having been found dead by the original TFG?