OB.....the higher the GS....the steeper the angle needed to arrive at your "target" on the ground....as the GS increase...it would follow the angle would steepen as well...along with the ROD needed to get there.....and that is where the Rub comes. If you wind up into Wind....the GS slows...Dive Angle decreases....ROD decreases....and less OOMPH needed at the bottom.
What I saw in the video was how flat the pull up was at the start of the maneuver which shaved height off the pull up....and the rest was history when the Pilots did not realize what had happened. Add in a fairly high DA....and it got interesting quickly.