It seemed a bit of a ****'s trick by the Bangladeshi captain. Yes; it's a law of the game. And, apparently, the Bangladeshis might have been concerned about the over rate, even though they're out of the competition. But it's not in the spirit of the game, for me anyway. Similar to mankading, in my opinion. Even Shakib's post match comments hint that he knows it wasn't really on. "There will be debates", and "I don't know if it's right or wrong" .I see the fourth umpire has said that Mathews had used up his two minutes, even before the issue with the strap of his helmet came about. But would the umpire have given him out, without the appeal from Shakib? Highly unlikely.