yea, I'm really not seeing the correlation here either...
As the price of the NSX's come down there are more people that can just barely afford to buy them, but not repair them. Lots of incomplete or damaged cars around that need parts, they go to the ultimate shopping mall and take what they need.
This particular NSX seems rather clean, so I suspect that this NSX will show up driving around with different, but salvaged, VIN numbers.
If you are up for it: call and try to determine your local "regional autotheft task force". Tell them that you had an exceptionally clean NSX stolen and you think it is a good candidate for a "vin switch". Give them some "personal points of id" and they should appreciate your efforts. And the pool of eligible VINs is so small that it would be an excellent case to follow up on.
They can put a watch out for any new salvaged NSX's that become re-registered. They will go out and authenticate the car and arrest the perps.
The insurance company will have paid out long before this, so you don't have to worry about getting the car back....but at least you have done some justice to some morons.
Drew