This is an example of planting at greater than 45 degrees, wouldn't you agree? This is an example of what a local coach is suggesting or advocating. The change from 45 to greater occurs just a split second before the heel plant. It's a late move and therefore isn't that different than a 45-degree angle that shifts to more open during the swing. That's how I see it. Key here, I would think, is keeping hands and shoulder back, maintaining that stretch/torque. See wrinkles in his jersey.
To me this is a good example of what some people call lead leg flare. I would be interested in reading other peoples view on that topic.