I'll send the scanned pages to those interested as soon as I find the magazine, hopefully this weekend.
Re witnessing the accident, I remember seeing the aircraft accelerating out of the roller with No1 prop not rotating, which was pointed out to me by the sergeant I was travelling with (we were at 90 degrees to the runway, close to the camp cinema). As it climbed out, the left wing started going down and a few seconds later I saw a complete top view of the aircraft as it wheeled over and went almost vertical. It struck the ground nose and left wing simultaneously.
As said before, the impact site was frighteningly close to MQs.