As far as Joelle is concerned, EDITING, EDITING, EDITING!!! She is always shown as sulkey. When Carla is berating her, she shuts down. I would too if someone said (yelled) something to me over and over and over..... I noticed at the weigh-in when one of the contestants did well (I think it was Dan) that she was hooting and hollering encouragement as much as anyone there. I am pretty sure NBC is not giving us the entire Joelle picture.