Gabriel asked if he could take a break from the album; the group refused to let him. "Friedkin freaked when he heard he could be responsible for breaking up the band," Hackett says. "Pete came back to it."
With both Charisma boss Tony Stratton-Smith and Tony Smith working out a middle ground for the group, Gabriel ultimately did not work on Friedkin's project, which became Sorcerer.
Source: 'I was aware there was something going on with Peter', prog.teamrock.com, 22 May 2015
"[Friedkin] put Bluhdorn's picture on the wall in the office in the scene where [the oil company foreman] finds out that the well is blown by terrorists and they can't do anything about it. When Bluhdorn saw his picture on the wall as chairman of the oil company he had a shit hemorrhage!"