Thanks for posting the map, Steve. I think it helps to better understand where I veered off from Nico. The GPX track stops at that point because I turned it off to save the battery (10% left on the external phone battery).
This point was the last slightly level spots I could lay down without sliding. After spending the night, I began sliding down again on my butt, taking paths that did not require large drop-downs to the next levels. This worked until I could go no further except with larger boulders or in the snow. I used crampons for the last 1,600 to 2,000 feet to the valley floor. I came out between Arctic Lake and Guitar Lake.
