Shayley Bourget Explains Why He Left Of Mice & Men Travis Faulk 12 years ago Shayley Bourget has released a video explaining the reasons behind his departure from Of Mice & Men below. Share this: Bassist/Vocalist Shayley Bourget Leaves Of Mice & MenDayshell (ex-Of Mice & Men) Sign To Sumerian RecordsAustin Carlile “taking over all vocals” On New Of Mice & Men Music