the whole sheet of the glass moves, as its see throughyou cant tell the glass moves. as the glass moves theres a hole for him to go tru, thats why he is using a large cover in front of the window, while most of the body is out the window moves back to its original place, thats why in the final clip his leg is rite at the bottom when he takes it out...
once he is out, they hold the white cover there for a whileso that the window moves down completly,
if you notice theres a guy in the room, and its a empty shop