I was flying this morning to get pics of the sunrise. I was at 390 feet, took some pictures for about 6 minutes. Started coming straight down to land and the drone takes off as fast as it would go on it's own. I had no control over it whatsoever. It flew about 800 feet from me but I could still see it. It finally stopped in it's tracks and I had control again. Flew it back and landed. Anybody else ever have that problem or does anyone have any idea what happened? I still had camera view and could control the dial but the sticks did nothing. The straight line was the only move I made after I finally got control, other than straight up from takeoff.