Ghana striker Abdul Majeed Waris suffered relegation in the French Ligue 1 after Valenciennes lost 1-0 to Bordeaux to eject from the top-flight.
Waris and his teammates knew defeat would not only inflict upon them a club record 21st loss of the season, but also end their eight-season association with the top flight.
Despite the stakes, the hosts could do little to alter their destiny as Faubert struck 16 minutes from time to send the hosts into the second tier.
Before that, the 22-year-old won a penalty on ten minutes but Israeli international Maor Melikson taken the chance presented to him inside the first ten minutes.
Waris had been sent tumbling by Lamine Sane, but Bordeaux goalkeeper Cedric Carrasso went the right way to push the ball to safety and keep the tension high.
Bordeaux had shown relegation form of late themselves, winning just once in their last nine L1 outings, but they looked the more confident side.
Only Carrasso Carrasso's outstretched leg denied Waris the opening goal after the Ghanaian had got his head to a Rudy Mater cross.