Could possibly be some kind of inside job, specially since the investigation shifted out to Pewaukee.
As far as removing nuts, er, I happen to have a little bit of knowledge in the area of jumbo sized nuts & bolts. What are you talking about when you say huge? You'd be surprised what kind of torque you can get with a wrench that has a long pipe slipped over it's handle. Also too, if you know the size & configuration of the nut, you can manufacture up a socket for it with a bit of steel & a welder.
I had heard the nuts were like 4 inches in Diameter around the screws. I have some big pipe wrenches and they won't span out that big.
The sockey thing makes sense. We better stop this or we'll have feds on the doorstep! ; )