If you watch the video carefully, he is creating magical arrows around the enemy and knocking the one on his bow back, during the charge up the magical arrows also get knocked back and the one on his bow turns yellow like the others and then lets go firing all the magical arrows he created. When you really understand whats happening all together it makes for a pretty awesome WS. You could even think of it as him making multiple mirror images of his arrow, the one on his bow disappears when he fires it giving it the effect as if hes controlling all the images from a distance. It looks odd because normally an Archer would be farther and the whole of the animation makes sense if he was at a distance.
