Robert Downey Jr. can’t handle the truth written on paper–or at least he prefers not do so at 2006 prices now that Iron Man was hit. The AP reports that the actor has returned his advance to Harper after having signed to provide a “candid look at the highs and lows of his life and career.” The wire notes that spokeseperson Britney Ross of Rogers & Cowan “declined to say why Downey wouldn’t be writing the book.”AP