I'm not certain there's any evidence to suggest that it's the writer's controlling our lives. It could just as easily be subconscious link from our memories and minds to the author's mind - what they think is their own creation is actually a recitation, if you will, of someone else's memories and events.
Before you could use 'the writer made me do it' as a defence you'd have to prove that it is working that way and not the other way. Either way, you're trying to prove a link between the two and while, believe me, I'm not saying that there isn't one - proving it is always the question.