Hi,
my idea is release parachute when in level mode MWC will rewind to 360 degrees or free fall.
This is almost a technical problem, program routine can be very simple.
Basic steps to safe MWC:
detection problem,
stopping engines
wait any time and release parachute
illustrative video
http://www.youtube.com/watch?v=bT8vpDTw ... dded#at=15