You almost feel sorry for Theon. I mean he is left to that sadistic little bastard.
Prediction: Roose has made a deal with Tywin (precisely why he is letting Jaime go) and assassinates Robb either in route to the Frey wedding or at the Frey wedding. Frey is the key. If he allies with Robb then Rob can carry on. If he doesn't then Robb is toast. Roose treatment and release of Jaime seems rather odd unless he is jumping ship.
Catelyn has become the most annoying on the show. She has some charisma, but her choices have doomed her family. First, shunning John Snowe, who had nothing to do with Ned's infidelity, drove him to the Night's Watch. John is sorely needed by Robb. Second, by taking Tyrion prison, by mistake I might add, she started a war with the Lanisters, in which Ned was injured in a battle with Jaime, which left him unable to defend himself and left her daughters in harms way. Third, not negotiating a better deal with Frey. Such as two daughters and not Robb. Fourth by releasing Jaime. Worst of all her decision. His release didn't guarantee anything and put Brienne in peril and Robb at odds with his men.