Following his retirement, Snepsts remained with the St. Louis organization and became head coach of their top minor-league affiliate, the Peoria Rivermen of the International Hockey League. Despite having no coaching experience, he led the team to a 48–25–9 mark for a 105-point season before losing in the second round of the playoffs. For 1992–93, he was promoted to an assistant coaching position in St. Louis under head coach Bob Plager; however, he remained in that position for only a year before being replaced by new head coach Bob Berry.