Trying to fly back at 200' from a SAROP in Scotland. Whilst dodging around the catspaws and general turbulence the aircraft was spun through 60 degrees or so to starboard. Believing the tail rotor had gone I dumped the lever and prepared to ditch and meet a local monster. I realised a few seconds later that we still had some control so I gently apllied a little power and as we didn't spin dramatically I flew us away from the water(about 50' or so).
Me and the other pilot couldn't answer the Raercrew who were demanding to know what the hell had happened.....