What's with all this book spoiler talk? First of all, this thread is about the TV show not the books, and secondly, the show has already deviated from the books in ways that make it it's own story, so why even bring the books to the discussion? They both tell of the same story generally speaking, but with exceedingly more variable details and even plot developments. They should be considered separate from each other.
Let's say, for instance, that something happens in book 3 to some character; the same may not happen at all in the show because the whole character is cut, so why speculate about it? Or it may be that the character makes the show but that thing that happened to it in the book never takes place in the show.
There have already been several characters that have died in the show that did not die in the books (at least not at the point they died in the show) and vice versa. There have been plot developments that never took place in any of the books and so on and so forth. Speculating on what would happen in future seasons of the show based on the book series has become futile.
And lastly, the topic title prohibits book talk.
Speculating about the future is difficult when one can't use book knowledge, but it's possible. And it's certainly a bit "easier" with those plot points that are different from the source material. So what will become of Stannis now, and how can Robb withstand the combined forces of the Lannisters and the Tyrells? These are the kind of questions that will probably not be answered, at least not to any final degree, in the final episode of season 2.