My recent ground station waypoints flight crashed to unexpected soft branches on ascending path between saved Waypoints. My PV2+ lost control, free fell 15 feet (not touching ground yet) and keep low flying 3 feet above ground like no control. Almost hit a moving vehicle. Just wondering why the flight locked to 9 GPS signal couldn't pick up the original paths after the soft crash and free falling ? Is this normal ? Eventually, I switched to ATTI mode to turn it off. What will happen if it hit by curious seagull or pigeon when it is in the air under Waypoint mode ? Will it fall to the ground zero or free fall some distance and back to programmed paths if picks up GPS signal ?