a graveyard spiral is a very scary and dangerous thing, I've been in one while doing helicopter survey work in the USA, the commercial pilot was young and never should have pushed on with the cloud as low as it was, we decided to turn back but he made the turn as we entered cloud, I was in the co-pilot seat (I'm not a pilot but have much airborne experience and knowledge) i could see what was happening through the instruments, going from a right turn into a descending left spiral, the pilot started panicking, while i kept trying to get him to look at his instrument to get the aircraft in control, we were all over the sky doing god knows what until i spotted a small gap in the cloud, pointed him to it, he got his orientation and control back, about 15 sec later we landed on the end of a small earth made dam surrounded by a forest, shut down the R22 and after about 15 minutes our nerves recovered enough to talk. as a young pilot he learnt a very important lesson that day, thankfully we survived to remember it. I also learnt a lesson, never let the pilot make the decision for you if your unsure about anything about the flight. I even  have a gps recording of what happened that can be viewed in 3d on google earth, if anyone would like a copy please get in touch