I do remember rob's proposal for the ironborn's surrender. your guess on what happened with that and with sansa sounds likely.
I feel very bad for theon actually. dude was dealt with a losing hand his whole life. he was given away as a boy, not his fault. felt like an outsider in winterfell, goes back home and doesn't get the greeting he expected. not a stark, rejected by his real family. takes his family back, goes to take winterfell, betrayed by his men and ruins his relationship with the starks and now he's living in hell. his only escape is to take the black if he ever gets away. otherwise, he's a dead man unless his dad and sister rescue him
I feel very bad for theon actually. dude was dealt with a losing hand his whole life. he was given away as a boy, not his fault. felt like an outsider in winterfell, goes back home and doesn't get the greeting he expected. not a stark, rejected by his real family. takes his family back, goes to take winterfell, betrayed by his men and ruins his relationship with the starks and now he's living in hell. his only escape is to take the black if he ever gets away. otherwise, he's a dead man unless his dad and sister rescue him