I saw this soft slab from across the canyon. I wasn't able to get a closer look but from what I could tell it was likely a natural release that occurred the previous day. Flat light made it difficult to tell exact numbers but it looked to be about 12-18 inches deep, 100 ft wide and had run around 300-400 vertical feet. The wind had filled in over top the debris pile and there were no sled or skier tracks nearby. Sorry for the crummy cell phone photo.