The TLDR of this video is that rather than splay your knees out, or some other pathological adaptation, it is better to just shorten up the stroke, and not go to full compression. Body preparation out of the finish is key, you don't want to stress your lower back.
If you look at elite rowers sprinting on the erg, this is not all that different than the stroke that they do.
Cam Buchan near the catch on a sprint workout, notice that he is not fully compressed.
