Yeah…that was my reaction. It’s hard to second-guess, especially when watching from the comfort of our living room and not from the position of the QB. However, as you pointed out, Carrington was open for quite some time and TW was still a ways behind the LOS. Also, as Carring was streaming across the end-zone (vis-a-vis vertically), conceptually, TW had a lot of window/angles to pass the ball.
Given how open Carrington was, even a jump-pass would’ve worked. Oh well.