Doug, Short answer is YES!
Since you ask, I am obviously shooting in an indoor target range and using a target stance. This is the best way to LEARN what your arms shoulders and back should feel like and their correct positions at full draw. Once you have that FEEL, It will not matter how you get there. It will not matter what your footing is like or what you have to do to get the shot off as long as you get to that correct full draw position.
If you watch many if not all the "old masters", they may not look as though they shoot the same BUT if you really study their full draw position just before release, they are all, almost without exception, lined up correctly with their backs engaged.
Thank you for the compliment.