So should it be that left nozzle is kept open and right one closed, in a non-standard operation to wrongly shut down the left engine first? I see photos of both 14A and B/D showing that(links below). Also I heard that F110 will show the same asymmetric nozzles after shutdown but the closed one will gradually open later.
By the way in DCS the result is that both nozzles close.
http://www.anft.net/f-14/f14-photo-vf041-17.htm
http://www.anft.net/f-14/f14-detail-engine-02.htm