Was there a slide at Big sky @ 1/22??

I read some snippets on NS, but no details at all...

Patrol had a pretty big cycle of slides in late January. Cold weather caused facet growth on the ground, enough to be reactive to hand charges. The wave, dictator chutes, and lenin all slide near the ground with crowns of up to 5 feet. The entire summit with the exception of Liberty Bowl and the Cooler were closed for more than a week.