Looks like Theon might have rescued Sansa Stark.I was more referring to the power he gained within his own family. Ramsay is a b*stard and after capturing Moat Cailin - programming Theon's bytchass to carry out his commands once again - he gains the respect of his father, is legitimized, and made successor to his father as Wardon of the North. In short, Ramsay managed to gain full respect from his father and thus accumulate more power, something Theon couldn't do in his own family.
There's still hope left for him