We're all new yoga teachers my dear.
There is no path for us at all without learning and growing everyday and the embodiment of humility and gratitude (that which keeps the Ego at bay).
The pawanmuktasasana series I believe is part of structural yoga therapy which is held by Mukunda Stiles and his pupils. Better to ask of that series with them. I have not learned it, have not practiced it, and therefore do not teach it nor comment on it