Well hopefully Full Wings is about to tell us since he has already stated that the crew were tired at the end of a long night.
Of course, it could be that he doesn't really know and that he is simply spouting bullsh*t.
I would like to know but I simply don't know the answer. What I can say is that most of the TNT pilots are Belgian and, much as it might astonish you, most of them live in Belgium.
It is therefore just as likely that the crew had reported for duty just before this flight.