The other Nimrod was driven by Drake Olson, he ran into the debris strewn from the Sheldon car. For some reason I seem to recall one of the Fitzpatrick Porsche's having massive shunt on the Mulsanne in practice that year as well (I could be thinking of 1985).
Speculation was that Gartner's 1986 shunt was caused by the gearbox seizing. A C2 car and Jochen Mass in one of the factory Rothman 962's had both just spun into the armco on fluid dropped in the Porsche Curves, and it was thought that it came from the Kremer Porsche, which crashed just moments later.
Fax