IIRC, Fleetwood and Peter Green walked out on John Mayall to found FM, but McVie either was still unconvinced or opted to make the transition more gradual for his long-time boss (he'd been on board since Mayall's first album) - either way, he lingered on for the Crusade record (while the Mac-less Macs recorded their first sessions with Bob Brunning on bass). Yet another example of his class. Great taste in women to boot, at least in the one case I'm aware of and alluding at... But yeah, I'd love to read about his experiences with the B-Breakers (sounds hippier like this, in a vintage way). EDIT: oops, it appears Mick did get the sack from Mayall after all. The other two guys did quit on their own accord, giving appropriate notice aforehand (unlike others in BB history).