Zaltz says:
http://www.espncricinfo.com/blogs/content/story/968937.html
A mankad traditionally occurs when the bowler diverts from his run-up to run out a non-striking batsman as the cheeky little blighter tries to gain an unfair head start by creeping down the pitch before the ball has been released. The only slight procedural issues in the Paul-Ngarava incident were that the batsman had not crept down the pitch, and the bowler had, philosophically, ceased to be a “bowler”, given that he evidently had no intention of bowling the ball.
Ngarava was not seeking, or gaining, an advantage. He ended up approximately half a millimetre out of his ground, having been in that ground as Paul reached the point where cricket traditionalists would have expected him to bowl. This was not, therefore, I would argue, a mankading. It was an entirely new form of dismissal, a watershed moment for cricket. It has brought the dummy, a popular staple of other sports such as football and rugby, into the moribund repertoire of bowling.
Perhaps we should not query the morality of the incident – cricket and ethics are uncomfortable bedfellows (as is so often the case with former lovers who have endured a long drawn-out break-up). The spirit of cricket is a mystical phantom of no fixed abode, who must be getting rather tired of being summoned up at opportune moments, having been flatly ignored for ages both on the field of play and in cricket’s administrativo-economico-political machinations.
It therefore seems a little unreasonable to expect teenagers to set a moral example in a sport in which ethics operate on such an intermittent, selective and unpredictable basis. Even if mankading your opponent for the decisive wicket in a crucial match when he was barely even backing up, let alone tootling prematurely down the wicket is so obviously wrong that most unborn babies would not do it. Instead, we should glory in the laws of the game being correctly applied. Even if we think the law in question need a major tweak and a stern telling-off.