Well,it looks like the rumour has just been substantiated and is credible.
The A380 at times suffers significant delays from time to time and crew are more than happy to assist the company where ever possible.
It also looks like this is not always the case.
The problem in a case like this is like the old cliche
'How long is a piece of string'.In other words how long is the delay because people are making educated guesses as to how long the delay will be and an guesstimate on an arrival time.In this case if correct 15 minutes was all that was left so it was fairly close call and could have gone either way.What if it had turned out to be 21 hours or 19.The problem is that CC are not always given informed and impartial information to make a decision and if the OBM's are not good at communicating or have their own agenda the rest of the crew can feel isolated.
You have a long tour of duty and there is a significant delay.The airline obviously wants to get the aircraft away and the tech crew do not always think of it from a CC point of view.
That does not excuse anyone from calling the flight deck during the no contact period or for questioning the Capt.You might not agree with his/her decision but they are in command.You should be able to say that you are not happy with the decision and that you will take it up later in the office but not when you are about to take off or the Capt/tech crew are obviously busy.
However,there should be a mechanism so that in cases like this if you think you have been given a snow job by the airline or the Capt or anyone once you get home you have an avenue to address the situation.