Just a short remark to yaw moment on a dry RWY,
I flew the day after the accident to RHO in a 738. When I took the AC from tec stuff, they told me T/R 2 is U/S. I got kind of a strange feeling, but off we went. At destination just for the sake of understanding the accident a little better we applied full reverse thrust on # 1. No yawing at all. I took my feet off the rudders for a while to check what happens. Nothing. Just rolled down the center line, ok, the RWY was dry. (No NWS input either)