Sad news indeed, especially if the incident was attributable to incorrectly fitted Q/R wheel and could so easily have been avoided.
Sometime before my 2016 car was built one of the three steering wheel attachments was fitted by the factory with a longer bolt to limit movement of the spring loaded removal collar. Many, including myself replaced this with shorter to allow quick removal. There are two sets of splines the wheel needs to fit over when re-attaching. It is possible to fit it located on just one although the excess movement is fairly obvious.
