Why wouldn't you just record Mick going in one direction and coming out the other? I had to reread it to understand that they weren't doing that. (I get that that is how this ties things together, but from a story perspective it feels like a weird move to me.)
edit: Or is there an implication that Mick may have also faked it?
edit: Or is there an implication that Mick may have also faked it?