It's rather wierd that your plane's nose would just hang in the air like in AH. I always thought that due to aerodynamics of the plane(it was ment to go forward) and the weight of the nose becuase of the engine, the plane would almost automatically bring it's nose down in a situation when a hammerhead is being attempted. I've noticed in some low speed situations and I am stalling(not an accelerated stall, just airspeed got too low), my nose just does not want to fall. Instead it sometimes prefers to go up. I don't remember what plane I was in, probably either a Hurricane MK IIC, A6M5b, or a Spitfire V or IX. But it seems that many planes in AH suffer from this.