I'm confused about the form on the Seated Rear Delts for Disc 13. Are the arms supposed to come straight out to the side (so they are roughly in line with the shoulders), or are we supposed to be pulling back (so the weights end up more in line with the lats)? Since it's a rear delt exercise I'd assume we need to keep the weights more in line with the shoulder, but on the DVD it looks like Cathe is pulling back.