Disruptions and revolutions are quick and often violent, but I wonder if structurally what happens in these situations is the spontaneous replacement of an old central structure (the shaft) with a new exoskeleton (the housing of the engine itself) that can contain an energetic process of a higher order than the old structure could metabolize.
Once the engine is running, whatever torquing and vibrations sneak past the engine mounts dwindle to almost nothing in the vehicle's huge, attenuating structure.
The Coupe has a significantly different structure than the MINI Cooper, Clubman and Convertible: It has three distinct segments dividing the engine compartment, passenger compartment and trunk.