Also,, I am not saying this cannot happen !
BUT
A. you have to be a Very very good card mechanic
B. if you watch the part were the commentator breaks down how the deal is done - pay real close attention a 5:05/5:06 mark in the video
It was obliviously EDITED to bring in a stacked deck -- so it is not as easy as he shows .....
But bottom line --always be wise to want is going on "mind your surroundings"....