So here is my version... Sansa and Theon find Brienne but they are being pursued by Ramsay's HOUNDS, so Theon goes north toward the wall to throw the dogs off and tell Jon where to look for Bran and Rickon and Sansa goes south (back toward the Vale) with Brienne on... ready for it? The cart Gilly and Sam have. In the Riverlands they are stopped by Sam's dad who berates his son about the Maester thing, berates Brienne for being a female soldier, then decides to turn Sansa over to the Lannisters. Brienne fights him, Sansa manages to find the brotherhood who protect her and that Stoneheart-ish story begins. Sansa will eventually be captured anyway and THAT will be Clegane bowl (not for Cersei who will win her trial) At the wall Mel will sacrifice Theon (kings blood) to raise Jon.