That happened twice during the years I worked the B-1B.
Tail number 85-0084. Had a bad aft fuel tank fuel fill valve.
We transferred fuel forward until the nose came back down and ran the CG way forward. Defueled the aircraft and replaced the part.
The fill valve diaphragm got a hole in it and fuel siphoned aft until it sat on its tail.
Easy fix, but a shit ton of hours to prep it.
NDI showed no damage to the structure, just minor damage to the tail cone.
Towed decoy system wasn't in use when that happened.
No damage other than the tail cone.
Takes longer to get the cone on the stand for replacement than the actual job does.
The key to refueling properly is IF the crew chiefs do their primary and secondary checks on the float valve solenoids.
Two solenoids, two windings per solenoid. Lots of redundancy.
Continuous fuel flow into any tank with the switch in one of the four test positions shows a problem.
I can guarantee that the checks weren't done. It takes two minutes to check and this would have been caught before it happened.
Pure fucking laziness.
This is why we always said, "I'd rather have a sister in a whore house than a crew chief brother."