Saw this on my tour today. Looks like the 4th skier on the slope traversed in a bit higher and found a pocket of wind slab. They were carried about 40 or 50 vertical feet before it looks like they were able to self arrest and ski off to the skiers right and join the rest of the tracks. I looked back through the posted avalanches but did not see this one reported. Seems like it would have happened in the last couple days judging by the freshness of the tracks. Didn't have a chance to look at what it failed on but its in the old bed surface of the massive gobblers slide from 1/12 and looks rocky so I would think that with thinner snow depths on that slope some facets were probably involved.