I know Jay and his car. I also looked at buying it a few years ago, in fact we talked about my buying him out of his lease before it ended and I also investigated it when it was at a dealer several months after his lease ended until I got the VIN and verified that it was Jay's old car car which I had already looked at.
The car was Jay's daily driver for the entire lease period. It was properly maintained. It was not a "showroom" car in that it displayed the standard wear and tear you'd expect on a daily driver in the northeast, but nothing excessive. It was in good shape overall.
The only "notable" event for the car is that he hit a deer at one point and did a decent amount of damage to the front end. There were some paint problems with the repaired and re-painted area, but he had that re-done.
The car floated around a number of dealers for well over a year after it came off lease and went through auction.
Chris Anders in Washington state eventually bought it, heavily modified it, and is subsequently returning it to mostly stock and (I assume from your message) selling it.
Chris has owned a number of NSXs which he has modified, and I would be confident that he did everything "right" both in modifying and unmodifying it (in other words, he didn't cut corners, put bad parts back in, or anything shady like that.)
The only reason I didn't buy Jay's car was simply that I decided I wanted a very low mile car that had not been a daily driver.