I remember said AEOp well (now teaching EW in Sleaford). He exemplifies my case entirely, an excellent operator lost to the RAF due to an un- or at least an ill-defined fitness requirement. I haven't seen any explantion as to the dramatic increase in the required fitness levels, it would appear to have been made at the whim of some faceless individual.
I have flown in every major operation the RAF has been involved in over the last 30 years and have never had my fitness to operate questioned, now I find that I have to achieve levels that I haven't been asked to get anywhere near for a considerable time.... 8 years ago I was on a bike, now I am being asked to run as fast/far as a 17 year old girl, if I could do that I would have a considerably younger wife!