If you're in the truck by yourself and this occurs while on a crowded road your options are truly limited. If you turn the ignition switch to off and you can't stop the truck and you don't ALREADY have an IP kill switch installed then your only option is to slam on the brakes and get on the shoulder. If the brakes don't stop the truck fully and you can't get it into neutral then lower gear to drop rpms my only thought under that type of duress would have been to attempt a soft marriage to a telephone pole. Otherwise, you're looking at property damage, potential injuries (or death), civil suits, and DEFINITELY the news which none of us want any of us to go through. I did install IP cutoff switches as more of a theft deterrent than a mechanical safety for a broken fuel pump so that would be an option but it's all luck of the draw. If it happens while you're already in bumper to bumper traffic you're either way.
Really great thinking
@Retiredwarhorses to pinch off the drain back hose on the IP. I wouldn't have come up with that one while trying to avoid motorists and getting to shoulder. Damn. Wouldn't even be easy to reach and not feasible if you can't get the truck to stop in the first place. I'm going to buy a couple more needle noses to keep in the trucks just because of this thread.
This is truly a worst case scenario. Real scary