i was flying my 3dhs Yak yesterday and on the 3rd flight the plane locked into a knife edge and i could not get out of it. i switched the gyro off but it was still locked in. i still hd power as i had throttle but the plane did go in and now it is in the bin. have you any ideas i was using life batterie into my 7008sb rx . i am wondering if the battery went low as i set my failsafe to hold but i still cant understand why i had throttle.