Castronovo was fired by Journey in August 2015 following a June 2015 domestic violence arrest. He was replaced by Omar Hakim on the band's 2015 tour, with longtime drummer Steve Smith subsequently rejoining the band.
While still with Journey, Deen, Jack Blades (Night Ranger, Damn Yankees and Shaw Blades), and Doug Aldrich (Whitesnake, Dio, The Dead Daisies) formed Revolution Saints. The band, where Deen served as lead vocalist and handled drumming duties, released its self-titled debut album on February 24, 2015. A follow-up album, Light in the Dark, was released on October 13, 2017. The album was ranked #8 on Dr. Music's 2017 "Album of the Year" list.
In June 2015, Deen was arrested for domestic violence. A Marion County grand jury later indicted him of rape (the charge was dropped later), physical assault, sexual abuse, illegal use of a lethal weapon, and contempt of court. After spending 15 days in prison, he went to a drug rehabilitation center for the fifth time. He was eventually sentenced to a 4-year probationary imprisonment (5 years, in case he violated the probation) and counseling for domestic violence.