I think do because according to the polls it is likely they will go next week Friday after Hazel goes this week. I'm sure BB will throw in a twist to save their twinnies!!
if it looks like they are going to go, there will probably be the equivalent of a last minute reprieve task or something.....either that or they will get more cake eating tasks every day this week.
There have been nearly's. They would have been out if Sophie had stuck to her guns and put them in the safe house. They would probably of gone this week if Callum hadn't as he said changed his mind about one of his noms this week. Hazel getting that 3rd nom has probably saved them.