RAPID warming and full sun on ridge line / S facing during that day. Wind loading from the storm two days prior.
I was boot packing up to 3 way peak, almost ready to strap in and ride. I had felt one isolated whomf about 10 steps down from the photo, and then possibly another a few steps before the photo. I was pretty sure something was going to slide. The slide happened right after the hiking photo. I was planning to ski cut the top before entering the gully I wanted to ride. When I was a few steps away from where I was going to strap in the snow cracked and slid out from under me, I dug my board in and took a few steps down slope and to the skiers right to get out of the path. The slide propagated about 100ft down the ridge, and the crown was about 1-1.5' deep. The slab was moving fairly slow but broke in big dense chunks. We didn't stick about to check it out because there was a small crack above us so we carefully strapped in and rode down to a safe spot. It seemed like it ran on a weak crust and/or faceted layer. There was definitely wind affect as well. We got out of there and saw a bunch of debris piles at the bottom, (that run right across where everyone traverses which is pretty sketch...) some piles were deeper than others.