Yes Gordon,
Quite a lot of facts missing actually. You cannot know the layout of our field or the special problems that it poses. The idea that we should have spotters is hardly an original thought. It is a club rule that everyone has a "qualified" spotter for evry flight.
The reason that the pilot had to fight the model is not that he needed to be given advice; he started his approach as soon as he knew about the problem. Base leg is parrallel to the museum boundary. So far,so good. As the model slowed down the reduced fin area caused the model to depart normal flight. Before he could blink the model was over the museum airspace. Whatever happened the model must not crash in the museum, so the pilot throttled up again and managed to get the model away from the museum.
The fact remains that the cause of the failure was the use of an innaproprite servo, not a bad servo, just not the right one for that purpose in our opinion. People may think we are being heavy handed and they have a right to their opinion but we have done as we see fit to protect our club. Period!