So is this the move you're talking about?
https://twitter.com/jjpower19/status/1072563138371948545/video/1
That is exactly what the move looks like and this is a great visual to refer to. However that is not how the movement is implemented at the high level. At the high level, that movement pattern is a "result" of other actions and not something that you can just do. That movement is very dynamic.
- For a glute athlete who isn't doing it, the root cause of the problem is likely rooted in preceding steps of the drive process or it's from active shoulder rotation into release or from intentionally getting too sideways as part of the drive, etc, etc... For a glute athlete, fixing this missing part of their motion should be resolved at its root...
The drill could be very good for a true glute driven athlete who does not understand how to stay back and resist turning forward or how their back muscles should be recruited when pulling the ball around the circle.
- For a quad. dom. athlete, the root cause is a deep underlying problem. Manually doing the stick move might bring awareness to the issue, but it likely does not have the ability to resolve the issue. Fixing the problem requires a lot of non-pitching work to resolve the underlying quad. dom. issue.
For a quad dom. athlete, the first goal in fixing their mechanics should be transitioning from the girl on the right to the girl on the left. The movement doesn't need to be same (deep waste bend vs shallow waste bend), but the hips should be the PRIMARY explosive element for propelling their bodies forward (NOT their legs/feet pushing into the ground).