Complex sentence: In 2013, Muhney was fired from the role and made his last appearance on January 30,2014; later that year, Justin Hartley was cast as Adam, and vacated the role on September 1,2016.
Split into simpler sentences: In 2013, Muhney was fired from the role and made his last appearance on January 30,2014. Later that year, Justin Hartley was cast as Adam, who remianed in the role for an additional two years before vacating it on September 1,2016.