Originally posted by anarchy
But the Theon/Reek storyline is from Book 5, so you're starting to see elements of books merging through the seasons.
Spoiler:
Yeah, it would've been hard to explain Reek without doing flashbacks, since 95% of his story was just him thinking to himself and remembering. I don't think flashbacks would have suited the series at all.
That being said, it would have been awesome to NOT see Alfie Allen (Theon) for several seasons, then have him return in complete make-up so most people wouldn't recognize him until his character developed a little.