We didn't redshirt Dorr this season because he is a walk-on, and most walk-ons don't want to pay for a fifth year. Palo is a different situation, may think he'll have a chance to play more and probably got some academic money, I believe he was pretty smart. Dorr hasn't played anything but mop up minutes, isn't needed for depth.
Dorr is from my hometown, I would love to see him play, but only reason he wasn't redshirted is because he is paying his own way. He is also probably 6'5" or so, 6'7" at best,regardless of what he is listed, not going to help much in the post, Cory Johnson couldn't do it either.