 He followed Moon when the drummer relocated to Los Angeles , but felt that the drug culture prevalent at the time was bad for Moon : " My job was to have eyes in the back of my head . " Townshend agreed , saying that by 1975 Butler had " no influence over him whatsoever . " Although he was a loyal companion to Moon , the lifestyle eventually became too much for him ; he phoned Curbishley , saying that they needed to move back to England or one of them might die . Butler quit in 1978 , and later wrote of his experiences in a book entitled Full Moon : The Amazing Rock and Roll Life of Keith Moon ( 2012 ) . 
