I don't believe that it was Neji who got hit by that arrow. Remember at the end when he asked, "what would Naruto do in this situation?" Well I'll tell you, Kage Bunshin; that's right, replicate. I believe that it was Neji's clone who got hit and this allows Neji to either sneak up on the spider guy or send chakra up the little thread attached to the arrow (controller thread). What do you guys think?