Game of Thrones season 3 - A Storm of Swords

 BOOK SPOILERS

While I do kinda agree, they did that with Theon already. It would have been quite stale if done a second time. Theon failing at decapitation is still probably quite fresh in peoples mind.

And I think showing Robb ignoring his loved ones and trusted advisors more than showed how "young" they are making him seem. I think they are building up to the Red Wedding quite nicely, by showing how Robb is unraveling as a leader and as a man. Like saying "Oh I know that Frey is an absolute madman, and I made a promise and broke it, but maybe he'll help me"

 Mmmm more spoilers

That's a good point and I agree that it is clear that Robb is screwed at this point. I really like how the show has been adapted from the book. It really is such a shame though. He had such potetial before he broke his marriage vows T_T