Now that I think about it, that is a very intriguing concept. It's not as if there would have been no foreshadowing.
We have already seen a primary example of a strange dehumanised clone coming about from a severed arm.
You would have to ask the question though, where was Imakarum Mirabilis when Apollon was building the cabin and whisking Archy away.
Unless they were 'hi-five'-ing and drinking beer together and singing old sea shanty's as they built it together.