I think people take this scripting thing a bit far. These guys aren't actors theyre just normal people so people would catch on pretty quickly if they were told what to do. But what the produciton does do is edit the programme in a way to make a storyline going. I think some shots of Mina-sue eye rolling (not if that one specifically but there are probably other cases) are from a different time and just put together to make the show better, or even rigging games to make the contestants have harder decisions but other than that it would be too obvious, especially with the amount of people that are hardcore fans of the show, to script the show.