Good episode - the time really flew by. I can see Cersei and Tyrion, trapped in similar unfavourable circumstance, reluctantly forming a temporary alliance against their father to weasel out of the current predicaments, as long as they can put aside their mistrust and hatred for each other long enough
As for Jaime, he's being portrayed as a rather sympathetic character of late, but I still don't trust him. He's physically and mentally defeated, for the time being, so I can understand his need to reach out to Brienne, who is the only friend in sight. As soon as circumstances change, so will his actions and demeanor.
Robb Stark was in a no-win situation. I don't blame him for what he did.
Seems like the Arya Stark storyline stalled a bit in this episode, but I'm thinking they're simply using her story arc as a tool to tell the broader story of the Brotherhood Without Banners.