 Osbourne, drinking heavily while still coming to terms with the loss of Rhoads, took his frustrations out on Gillis and treated him very poorly.As a result, Gillis left Osbourne's band after completing the 1982 "Diary of a Madman" tour and he returned to Night Ranger.Gillis can be heard playing lead guitar on Osbourne’s 1982 "Speak of the Devil" live album and on the DVD of the same title.