Well we didn't sign Orlovsky but we traded for his one time backup.... From Wikipedia:
Stanton was selected by the Detroit Lions with the 43rd overall pick in the 2007 NFL Draft. He was placed on season-ending Injured Reserve during training camp on August 3, 2007 after having knee surgery.
In 2008, Stanton sprained his thumb on his throwing arm during preseason, keeping him out the remainder of the preseason. After Jon Kitna was placed on IR, Stanton moved up to 2nd string QB, behind Dan Orlovsky.