 He went through rehab several times in the mid-1980s, before attempting his IndyCar comeback in 1990, with his cousin, Todd Walther, serving as the team owner of the #77 car.He DNQed twice at Indy in 1990, and 1991, and then became a father to a daughter in 1992.In 1998, Walther was convicted of "illegal conveyance of painkillers into the jail" after trying to smuggle three Tylenol III tablets, each containing 60 milligrams of codeine, into his jail cell.