The pictures are very compelling proof that the achor theory does not neccessarily hold true it terms of hurting speed or results. Rather than saying they could be better if they didn't do it, one could equally say it may be a mechanical component to their success (That supposed 72mph pitch from Christa is wierd because it almost looks like a screw ball).Here's a couple more elite pitchers not turning in the ts knee or hips towards the catcher prior to release.
I've seen lots of high end college pitchers with this drag though just past the point where these pictures were taken the pitchers are usually up on the toe or even off of their back foot. My concern has always been the stress on the inside of the knee with that foot dragging on its side and facing backwards.
The knee is another issue. As I mentioned in a previous post the knee should have some forward orientation (which it does with Jenny and Sara) but many kids with this big drag over rotate their hips and actually turn the knee somewhat backwards.