A very similar accident occurred at Ashbourne airfield, Derbyshire, in 1975. A parachutist became entangled with the step on the undercarriage of the jump plane (a Cessna 182). The pilot climbed, to give extra time, hoping that the parachutist could use his reserve ‘chute. Before he could be cut free, he actually pulled his reserve chute, which stalled the aircraft and he, the jump-master and the pilot all came down to earth, partly inverted and still attached to it.
However, they all survived with injuries.
The parachutist later became an RAF navigator.