An Explanation by one of the viewer on Youtube

Spoiler:

Hey dude I got the explanation. The cards dont really become mixed after cutting, after putting the 9 cards on top the aces will be number 10, 26 and 42, after putting 4 on the bottom its 6, 22 and 38 (counting from the top). These are the cards that will be faced down First time: 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 Second time (reversed order): 50 46 42 38 34 30 26 22 18 14 10 6 2 Third time: 6 14 22 30 38 46 Last time 38 22 6 And there's your aces=)