I understand that a lot of people don't like Ricky Williams. Neither do I. With that said, that was a really cheap shot by Lawrence Timmons.
I thought that on the first look. But I honestly don't think it was intentional. The ball was loose and at a 90 degree angle to the way Timmons was running. The footing was beyond crap on the field.
I think he turned to go after the ball, tried to pivot without looking.
Of course, I'm a Steelers fan and am skewed. But I did think it was bush until I saw the ball and full speed replay.