Much of the upper part of the drainage had slid and run well into the lower angled terrain of the valley bottom.
We observed the crown from the top of PMS bowl. It looked pretty substantial.
3500 is a rough guess at elevation but it took out cornerpocket's apron, propagated underneath the cliffs lookers left and right of cornerpocket, and ran at least as far as the flats below the north facing couloir below cornerpocket.
It looked like it naturaled during the storm and had started to fill back in.
Sorry for the outdated report but better late than never.