 Kleinendorst was announced as the new head coach of German DEL team ERC Ingolstadt on November 26, 2015 and had his contract renewed in March 2016.However, he returned to the Binghamton Senators on June 8, 2016, as head coach instead of staying with ERC Ingolstadt.The franchise became the Belleville Senators after his first season back and he was retained as head coach for 2017–18.