Good post Grahame. These officers also had the unique advantage of seeing the crime scene before everything was disturbed. From what I understand, the unanimous view of these officers, was that it was murders/suicide.
That's the way I saw the verdict back in 1985,,as I watched,,,on television,,,,bewildered young man being handcuffed and led away. It was awful and so very cruel. He made no struggle because he thought for sure he'd be released,,,as afterall,,,his conscience was clear.