Crashed my H last night. Was taking pictures of fireworks and came in, changed battery and went to take off. Went straight up and before i had a chance to do anything else it took off headed for the woods and went really fast. My only reaction was to hold the throttle up to try and gain altitude and not hit the trees but unfortunately that didn't work. I am just wondering what caused it to behave so erratically? I checked my st16 settings and I wasn't in smart mode or anything crazy.