Your instinctive reaction at the sound of the horn should be to slam the lever down, correct the yaw with the pedals, pull the cyclic back to 60knts and sort yourself out. (All this assumes previous comments about being within a suitable part of the height velovity curve).
Glad I'm not the only one with this line of thinking!
I think it is a good way to stop those flimsy little blades doing a Hills Foldable Clothes Line impression.