Flying Lawyer,
Your point I don't think was well made was that others may be open to critcism. I don't see why. The main mud slinging seems to be directed at this security guard. Why? Because he reported the matter to the Police? I see no reason why he should be the butt such venom. Maybe he has an axe to grind obout pilots, maybe he hasn't but the point is that the local Police turned up and presumably found enough evidence to arrest, as they did.
I was a Police Officer by the way and as for Judges Rules, like you I haven't had reason to look at them for a while, so I was relying on memory. In any event, I looked it up and it reads as follows:
'Judges Rules General Principles.
A. That Citizens have a duty to help a police officer to discover and apprehend offenders.'
I would read that as clear, although irrelevent as 1. they have been replaced by PACE and 2. The security guard is in america.