I suspect that Juliet is actually BAD, and that Ben might be working from the inside of his own group to set them on the right path.

Hence why Alex wanted to see Ben (she yelled it a couple of times) when the Others were dragging her away from the cages.

__________________
"The Naked Gun!"

Frank Drebin remembers a lost love.

Frank: It's the same old story. Boy finds girl, boy loses girl, girl finds boy, boy forgets girl, boy remembers girl, girls dies in a tragic blimp accident over the Orange Bowl on New Year's Day.

Jane: Goodyear?

Frank: No, the worst.