There are long checklists for handling uncommon scenarios like this. I would expect that was one of many items on the list, but I'm not familiar with the checklists. It is possible that the explosion disabled the fuel controls.
They do, but there may be residual gas or punctures that cause a gas leak. That's why each side of the plane has its own fuel tanks as well.
Someone in the comments mentioned that that isn't a fuel fire; its materials in the engine that are burning.
I’m almost certain they did. You might be seen the runoff in the lines?
Fanned by a couple of 100 mile/hour winds. It would take a small miracle for the fire to go out by itself under those conditions, they may have tried to flood it with CO2 but it's so open to the elements even that may no longer work.