I for one am very happy for any plausible theories to be put forward regarding the final minutes of some very good friends of mine. I think we are agreed that they were not negligent, reckless or stupid. They clearly thought they knew what they were doing. Hands up all those who have completed their flying careers without ever once having experienced that "hmmm, that wasn't quite what I expected...but at least I got away with it". I think that it is useful to be reminded that aviation can be an unforgiving profession. We'll never know what happened - the original BOI is an incredibly thorough document - but continuing to discuss events is perfectly understandable. I'd love to know what happened that summer's evening....it haunted my flying career for nearly twenty years. If my friends' memories are kept alive by threads such as this then I think that is a good thing.