It was the interview that broke the taboo of criticising a living legend. Winnie Madikizela-Mandela had delivered a withering verdict on her former husband Nelson, saying the South African anti-apartheid hero adopted by the world had "let us down". Yesterday she said the whole thing had been "fabricated" and launched a scathing attack on the wife of V S Naipaul, the woman she blames for tarnishing her name.