i still think that turning around is a better strategy than forcing your back to an arrow, even if the spider guy could move his arrow it would be easier to spot it when its coming to you because otherwise the arrow would have to go a full arc while keeping 50 metre from neji which mean a distance of 157 metres around neji. anyways why leave your weak spot open when you dont need to.

also i think that 64 hands is more a tech that speeds up movement and perception instead of just hitting chakra points because neji can hit chakra points normally