During the landing the pilot lost sight of an aircraft landing ahead. He pushed forward on the control column to check the runway in front was clear and then pulled the column back to continue the flare. The aircraft then stalled and descended quickly towards the runway. Both main landing gear legs collapsed on impact and the propeller shattered. The aircraft then slid a short distance along the runway until the tip of the lower right wing contacted the surface and the aircraft span through 180º. It came to rest on the grass and the uninjured pilot climbed out without assistance.