Look at the clip in the OP, it's not just his hips - his footwork is off. He slides right to avoid the rush, which is fine, but instead of re-setting properly he stutter-steps and then throws kind of across his body from a wide and kind of upright stride. That CAN'T be how Palmer and his current coaches want him to throw. I'm talking about his base when he delivers the ball - I think Palmer was talking about his feet being too close to each other pre-throw, leading him to open his stride too much when he readies to deliver the ball. I don't see that going on in the clip, I agree - but he never properly re-sets and throws from an upright splay.