Hempy, if you read Chippendales report he gives a good insight into the phenomena.
most pilots at AirNZ at the time felt Collins must take some blame
Of course he does
Ornis, but the need is to understand why he did what he did.
This constant picking at a sore hoping it can be made to heal without a scar is absurd. It's not going to happen.
Read my previous that threads on this subject never end well.