Ehrenfeld previously coached the offensive line at TSU for three seasons (1997-99), helping the Tigers capture back-to-back OVC championships in 1998 and 1999. TSU was ranked number one in the OVC in rushing over those two seasons. Notably, four lineman from the 1999 team went on to play in the NFL. During his tenure at Tennessee Tech, he coached Frank Omiyale (Carolina Panthers), who became the first draft pick from the program in more than ten years.
Prior to his experience at Tennessee Tech, Russ coached at Bucknell University where he coached the offensive line, coordinated the running game and assisted with special teams for two seasons.
His first collegiate position was as a graduate assistant at the University of South Carolina, where he had the opportunity to coach the Gamecocks in the 1984 Gator Bowl.
He served three seasons as offensive line coach at Austin Peay, and in 1988 and 1989, he coached the defensive line and inside linebackers at Itawamba Community College. He returned to the OVC as the defensive line coach at Southeast Missouri State from 1990 through 1992.
After two years at Eastern Michigan, he then returned to Austin Peay as assistant head coach from 1995 through 1996. In 1997, he moved to Tennessee State for three seasons, helping to capture back-to-back OVC championships in 1998 and 1999. Russ also coached at Alabama State for one season, tying for the eastern division title in the SWAC in 2000.
He and his wife Laurie have three children, Ashley, Brennen and Katie .