Career
He served as the head football coach at Trenton State College in 1974, compiling a record of 5–4. Curl also was the head coach for the Frankfurt Galaxy of NFL Europe from 1998 to 2000. He led the Galaxy to an overall record of 18–14, including a World Bowl championship in 1999.
He was the quarterback coach and assistant head coach at the Saint Louis Rams until his retirement in January 2011.