What is it with me and SJA, Xyloks in particular?! I know I'm a saddo, but I had to do this. HAD TO. It's referencing the last episode of the first series of SJA, when it's revealed he was evil all along. Don't own Mr Smith or SJA.
and yet... all it took was a little jiggery-pokery to reprogram him and put everything back to normal. whoever gets my little refference wins a cookie.