Crew performance aside, the plane proved it was capable and had enough layers of safety to withstand the explosion.
We remember another engine explosion on a DC-10 which rendered the plane’s hydraulics useless. That heroic crew saved 60% of the souls on board by crash landing in Iowa.
This Quantas plane was controllable.
The DC-10 is without a doubt the worst engineered modern passenger jet. It's successor, the MD-11 isn't much better. At least now when they crash, it's carrying cargo instead of passengers.