The first time I saw the trick I told my wife he had the soles of his sneakers cut out and was going up on his toes. The second time the trick was shown the camera was a street level and I could see under his feet. Of course editing could account for the illusion.
In any case, his card tricks alone are worth the price of admission.
BTW.. have you ever seen Michael Moshen? His manipulations using his hands are truly amazing.