Instability in Beehive Basin

From email: "My partner and I skinned up, along the national forest boundary signs just northeast of the north fork trail junction. We had some thoughts about going into middle basin, but before even digging any pits we got a substantial whoomph. I dug a pit on the NE side of the ridge splitting beehive and middle basin around. 9200 ft, I didn’t get propagation or any fracture, the column just mushed down. My partner dug a pit about 20 ft higher and closer to the ridge top, he got an ectp13, it propagated on a crusty layer that was on top of faceted angular grained snow that was on the ground.  I dug a pit on the opposite side of the ridge, SW aspect. Did 2 ect tests, I got a fracture only on the first, got ectp17 on the second."