Anyone still wondering how he does that? Fortunately, this is the internet, and the internet has answers!
"Metal bar running up the right leg supports his entire body weight along a large plate which is designed to counterweight his body. Notice his right foot, never leaves the ground or does he move spot."
-- Frymewitheggs, Reddit
So, sorry, it's actually NOT magic... but you can still pretend it's if you want.