Come on, these guys all go home after filming....you dont think they tell those close to them how they got on?
They probably have confidential agreements signed... but your right, they probably would tell friends family ect.
I think its the UFC limiting the possibility of results getting out, they might not be able to control it for few weeks they are out of the house leading up to the final, but they can control it while they are in the house.
Dana already said, he'd seen the messages and one of them that was sent contained results. TUF is already struggling with ratings, I can see why Dana made such a big deal of it.
Had it just been one person and not half the UK team they'd have been made an example of and kicked off the show. As it happens kicking 4 UK lads means there wouldn't be much of a show left. Plus the UK guys are making TUF one of the most interesting in years.