Before a concert on a US tour in August 1972, a backstage argument between a drunken Kirwan and Welch resulted in Kirwan smashing his guitar, trashing the dressing room and refusing to go on stage. Having reportedly smashed his head bloody on a wall, Kirwan watched the band struggle through the set without him, with Welch trying to cover his guitar parts. Welch remembered, "I was extremely pissed off, and the set seemed to drag on forever." The band fired Kirwan, and the artistic direction of Fleetwood Mac was left in the hands of Welch and Christine McVie. Fleetwood said later that the pressure had become too much for Kirwan, and he had suffered a breakdown.