IF THERE is one thing remarkable about Diego Maradona, it is the achievement of living to his 60th birthday. There was a time when you thought he was destined for an ugly and premature end, either caught up in some underworld violence or falling to a bout of self abuse. Although the recent World Cup, where he was seen shouting expletives from the VIP section of a stadium, demonstrated he was still a man who walks on the wild side, Maradona is no longer on the critical list. When the excellent Asif Kapadia film about Maradona was released, it reminded us that here was an imperfect genius with many guises: brilliant footballer, good-time Charlie, a defiant product of the slums, and to some extent, a…