The Northern Wallowas received about 6" of new snow on Saturday, March 6th. Moderate south winds overnight transported this new light density snow onto leeward N-E facing aspects below ridgeline creating 1-2' thick reactive wind slabs. As a demonstration for AIARE Level 2 course students I conducted a belayed and anchored ski cut on a north facing 35 degree slope at approximately 8200' along South Ridge. Initiated a D1.5 avalanche with crown approximately 18" deep, 50 yards wide, and it ran 300'. It broke at the old/new interface and consisted of 4F density wind-deposited snow. We verified the wind slab problem the 3/6 advisory listed as the primary concern.