Personally, I'd be looking closely at the weakest links; where things fell apart.
Even if it was an aberration (turns out it was not, but the season may well have been) it'd be good to understand the "warning signs" for future reference. How do certain players behave under particular pressures / season fatigue etc etc.
I can understand not dragging the players through their failures, but i cannot understand why on earth you would not want that information as a coach.
Just my 2c - I'm not a coach and contrary to what he says publicly, I suspect (hope) he actually has indeed re-watched it.