Here's RAWK's objective opinion of the incident.
The other thing about that was standing on an opponents achilles whilst running at full pelt is a pretty good way to invite yourself. For me Suarez slipped a stride earlier and skidded into Distin as much as anything. Both flanks were very heavily watered both before the game and at half time for some strange reason which didn't help.
It's like a competition to see who can contrive the most convincing excuse to disguise the actions of a kunt.