The aircraft was a Cessna Caravan. The plane was at 14000', and had opened up the door when a chute deployed inside the cabin and being sucked out taking the parachutist with it. The parachutist got tangled up on the tail ripping it off. With the aircraft in a nose down spin without an empennage, the other 10 jumpers managed to get out. The pilot who was an experienced jumper himself had to get out of his seat, open the roller door which had shut due to the g forces in the spin, and managed to jump at around 600' agl. All jump pilots are advised to wear chutes in Australia even though it is not a requirement. I have been a jump pilot and I wouldn't go near a jump plane without a chute. Further to this story is in the DUNNUNDA AND GODZONE section of PPRUNE.