Hi Vasea and Steve,
It may be that your feet width is widening because you are not shifting your weight from one leg to the other fully enough with each movement repetition.
Remember that each time you turn back to face the front you should:
1. stabilize in a double-weighted position (50/50 on each foot) whle your flicking arm and hand lowers to the ground,
2. THEN shift your torso weight fully from one leg to the other, and
3. THEN turn your hips toward your newly weighted leg.
When you do it this way the leg you are turning toward and on is really solidly planted, and therefore shouldn’t move.
If you don’t clearly and fully shift before you turn then your torso/body will be in between your feet and the turning motion of your hips can easily push your feet outward.
One other thought is that it’s okay to not have your toes all pointing to the front with your feet parallel. That is the goal in the long run, but if your feet are turned out somewhat that’s okay. Your legs and feet should feel comfortable and solid.
See Bruce’s book, Chapter 5, Steps 3, 4, and 5 for more info on all this.
And it’s a good point to remember the 70 percent principle on how far you turn!
Enjoy,
Bill