No, No, keep it (the thread) open, we are not MI5 or the SAS, nothing sensitive is being compromised here and if the thread is shut down the conspiracy nutters have won again (" see, they shut the thread down, something odd must have happened").
taters - this theory won't fly for all the reasons already given and more-I could start with the technical difficulties in just taxiing an unpiloted aircraft around a busy airport without anyone noticing the lack of folks up front but ShesGreatinTheGalley had the best counter in one: in the course of their work crew talk to each other, and even, on occasions, Cabin Crew talk to the pilots and vice versa. And as was said, lack of Tech crew would be strictly a "no go" item.