I was just reading about the trick with the OW footage. I think it was Copperfield, not Henning. Anyway:
The woman in the front row is a plant. She acted too nervous. Not removing the jokers from the deck was planned. She shuffled the deck, then he asked her if she removed the jokers. She hadn't. As she took the jokers out. She put two aces on the top of the deck and two in the center, holding the place with her pinky. Then he asked her to put two piles on the stage. Now we have two stacks with two aces on the top of each. Counting any number of cards from the top of each stack and then "dealing" those cards into two hands will put an ace on the top of each of the four hands.
And that is that.
I'm usually not good at figuring these things out, but I did it just by watching the trick and keeping the most open mind possible.
I wonder who that woman was and what relation she was to Orson. Gary Graver was the plant a few times, so she could have been a friend. Cute, too.