Simus joined the varsity squad at Colorado College in 1961 and suffered through one of the worst seasons in the history of college hockey. Simus scored 14 points for the Tigers and the team lost all 23 games they played during the campaign. CC's offense wasn't great but it was the defense that caused the most trouble; the Tigers allowed an average of almost 8 goals per game. The next season the team saw a vast improvement in play and produced a winning season (12–11) for the first time in five years. Head coach Tony Frasca was named as the National coach of the year for the quick turnaround but he resigned at the end of the season. As a senior Simus was relied on heavily by new bench boss Bob Johnson. Simus responded by leading the team in scoring and was named to the All-WCHA First Team and was an All-American.
After graduating, Simus eventually joined the Army Rangers and served both in Vietnam and the Dominican Republic. After leaving the military, Simus worked for Electronic Data Systems for 30 years.