I had a colleage lose the entire tail boom of a 407 (1 0f a handfull around the world) He immediately dropped collectice with out closing throttle, came down in an auto style descent and towards the end of the flare, the ship began to spin, at which time he cut the throttle and cushioned the landing, bending only the skids, in a 180 or so style landing. It was his fortune that this was a technique taught to him just previous to the accident.