Might I just add that cloaked transports who supplied base, then undocked, died and then asked to leave might have had intention to give cloak to other transports to do the same over and over again? Not to count renaming possibility.
And that would be harming the gameplay by abusing rules to one's benefit.
I don't see the reasons why transport wanted to leave the system instead of logging more combat ships to counter the siege. Well, I see one, to force others into breaking rules and causing harm that way.
Also, how did thsoe guys asked to leave the system? System, local, /fm or private messages?
Because local chat while in station will be visible 100k below center of the system, where the ship is registered to be while docked.
I don't want to take any side, but this smells fishy.