I saw that you mentioned that earlier. Maybe that foot just needs to be a little further out to start. Some people will need to deviate from the feet in line with femurs model a little. If it doesn't hurt your knee you should be fine. Whatever the case, moving so much with the bar is not a great idea. This will become more problematic as the weights get heavier. On the plus side, all this dancing around is happening between your squat reps which happen to look pretty damn good.