I loved this chapter. Best of the preview chapters in my opinion. The ending is chilling and unanticipated perfection. It ties in so well with the last Bran chapter where he tastes the blood of the sacrifice to the weirwood tree. And what else can be done with Theon? He redeemed himself from his Reekness with the rescue of Jeyne, but he was still responsible for loss of Winterfell and his actions led to the sack of Winterfell. He can never be forgiven for those actions. A sacrifice to the old gods is perfect. It is as noble an end as he can hope for. Also it will strengthen Bran/weirwoodnet so it acts as redemption. I hadn't thought of using the lake with holes in it to kill the Freys, but that sounds like a great idea. I was thinking that Stannis would be inspired by the wall and would build a giant snowcastle from all the snow.The snow is good for building (if it's the same as at Winterfell where they made the snowmen) and would even be forshadowed by the Sansa snowfort scene and by Mel's looking for Stannis and only seeing snow.
