Just came in from a flight(Phantom 3 Advanced) Strange thing happened.Did a return to home .All ok . Bit of wind when it landed. Bounced over and proceeded to screw itself into the ground. I picked it up whilst it was still running and one of the motors was not turning. Stopped the motors(3) Turned of everything -- Controller - Phantom 3. Turned everything back on. All motors started and Phantom flew as per normal. Any ideas.