Ok, perhaps I am the only one who is dumb enough to do this but this actually happened. My bird was 1.2 km out and 83m up. I decide that was far enough and I want it to come back. But I get my left and right sticks mixed up and instead of the right stick, I go full down on the left stick and hold it there while chatting with a group of kids who were around me. By the time I discovered what I was doing, my bird had descended to 12m. I had the left stick full down for about 41 seconds; all that time, I had assumed I was holding the right stick down. Distracted flying is bad, real bad. Lesson learned. Also, I feel really stupid.