Was it dangerous? No. Even if it had caught a skier or hiker on the road it would have just pushed them around a little at most, but it does suggest that the snowpack is very unstable right now. I can't remember ever seeing snow slides in the Cheyenne Canyon/Bear Creek area just outside the city. Anyone else?
I'm glad I wasn't up on Pikes Peak.
As an aside, the skiing on High Drive is absolutely dreadful right now -- sun-cupped ice topped with wind-blown gravel. It doesn't get much worse. On the other hand, skiing on Upper Gold Camp Road was very good Saturday, and may still be today if the warmth hasn't melted all the snow. Better hurry.