User blog comment:LexiLexi/Is Theon the Latest Game of Thrones Villain?/@comment-15014822-20120514221702/@comment-91.125.54.130-20120515214614

I've not seen many charred corpses in my time but they looked pretty genuine to me. I don't think they'd have the know-how to manufacture mannequins of children that are semi fire-resistant with bone inside.

I'm sure Theon got to the farm, couldn't find Bran or Rickon but on the advice of his first mate (whose ideas have all been brilliant so far :/ ) killed and burned the bodies of the two young farm boys beyond reckognition so that people think they're Bran and Rickon.