Did a little flying this evening tinkering with our CGOET. Flawless flight until I touched down. The auto disarm for the motors didn't work an she throttled up just enough that it almost tipped over backwards. I corrected with a little throttle input myself, set it back level and manually shut it down with start/stop button. All firmware is current and this is a first time seeing this type problem. It did give an error stating something to the effect of, WARNING auto disarm fail.