Video: Graeme Swann tampering with the ball in Ashes?

This incident happened during the first Ashes Test match at Trent Bridge. It looks like Graeme Swann bends down and applies some sort of a spray or agent on his hand.

Why he was doing this during the drinks break and also away from view, has raised many eyebrows and questioned the integrity of the player. Meanwhile, the ECB has come out and dismissed these allegations against Swann.