Excellent work Capt Kremin. Very nice graphic.
I think that many of us who fly the 777 for a living agree with you. The AP is going to follow a limited number of lateral inputs--LNAV, HDG HOLD, HDG SEL, TRK, or LOC. Plus, for LNAV we know that it is a three-step process of selecting the waypoint, executing it, and then selecting LNAV on the MCP. How many times have we had that drilled into us about "Execute then LNAV?"
At the very least, the initial turn off course and the entering and/or selection of new waypoints reveals very deliberate actions--by whom I will leave open pending further discovery and investigation. I think however, that many posters have overlooked just how deliberate those actions need to be and that they were most likely not the result of a happenstance case of hypoxia or fire brigade duties...