The question the uninitiated would ask is "Why?"
Was it the sheer power of the good engine overcoming the rudder? High wing loading? Not enough fin or rudder area? Just not enough rudder authority? Cross section area of the dead side? Drag from the dead prop? Was the prop on a dead engine featherable?
One would have thought that a Merlin on full throttle would have little problem overcoming even the drag of undercarriage in such a low drag aircraft
Interesting comparison with the pictures I have seen of a shackleton flying two dead engines on the same side (for display) apparently quite manageably.