Rode our snowmobile on a really nicely groomed road in the Wasatch Mountain State Park from the Mill Flat Trailhead. Skinned and booted toward Ant Knolls. Only a couple turns into skiing a line, I triggered a small wet loose while dropping an east facing 40 to 45 degree slope. The slide started very slow and small but picked up speed and width. I was able to stay to the side of the slide. Not risk of burial but may have been knocked me off my feet if I did not have the space to move to the side.