Just a thought from a beginner to magic...
...could it be that he's got the deck initially set up so that the riffles (couldn't tell if they were "perfect" or not, nor did I watch more than once) leave the cards in a pre-learned order?
In that case...
No force,
No peek,
No marked cards,
Stacked deck, "false" shuffled into order.
Maybe he's got a way of riffling that isn't one for one like a "perfect" one, but still gives a predetermined order. I don't know if that's even possible (I'd imagine so) but that could be enough to get the move past the trained eye.
Or maybe he should be burned at the stake.
