By now he had broken his drug addiction; biographer David Buckley writes that Isolar II was "Bowie's first tour for five years in which he had probably not anaesthetised himself with copious quantities of cocaine before taking the stage. ...
Selleks ajaks oli ta uimastisõltuvusest vabanenud; elulookirjutaja David Buckley on kirjutanud, et Isolar II oli "Bowie esimene tuur viie aasta jooksul, kus ta ilmselt ei tuimastanud end enne lavale minekut suure koguse kokaiiniga.