Truck died and won't restart

[SConklin]

I have a 2002 truck with a 12v conversion built inside and out by PDR. It's built to operate at WOT up to 4k rpm's comfortably with a stoopid pump.
I was getting on the throttle harder than usual tonight, and as soon as I let off, the rpms went to zero, and I could not restart the truck. I cracked opened and checked every single fuel line. I have good pressure, and good return fuel flow. However, neither side of any injection lines (pump side or injector side) are bleeding off any fuel when cracked open and the engine is cranked. There are no chips in the oil, and the motor is designed to be twice as stout as a standard motor anyways, so I doubt it's the motor. The only electronics that I could forsee preventing the motor from starting is the shutoff solenoid, however, it seems like a coincidence that it would have died right as I was getting into the throttle, and going fast. Or maybe I'm wrong. Is that a common issue for 12v pullers or racers (I'm fairly new to the 12v world - coming from a 24v). Otherwise, I would have to assume that it's the pump itself, but I've never heard of a PDR pump or hardly any P7100s at all for that matter, failing that often (that's why I ditched the 24v in the first place!!!).
Am I correct in assuming that it's the fuel shutoff solenoid? A relay? Fuse? What would be most probable?
Thanks,
Skyler