Just to respond to my own question:Just a quick question, and as I said I am coming late to this case and am trying to work through many threads , so apologies if this has already been addressed:
Is the general consensus about that last picture of TA is that he knew he was about to be attacked? It certainly is a compelling pic and looks that way to me.

Do not know what to make of this, but on the findadeath forum, there is a thread talking about that final photo and suggesting that you can see JA with her arms raised and behind her, poised to strike reflected in TAs right eye. Interesting, but cannot be sure it is valid: