Damage limitation. Moyes says nothing and talks about the game rather than the incident, he's drawing his attention away from it. Deflect it against Stoke and their shirt pulling etc blame the refs for not putting a lid on the shirt pulling.
Coming out and saying "throw the book at him" just makes gives the FA incentive to make an example out of him.
Oh and the fact hes on the back page of every paper being called a thug, every sport outlet calling for him to get 6 to 9 game bans, that he's a dirty player, just means he's gonna get a massive ban.
And we've just let it happen when other players do nasty things all season but have dodged any backlash.
We havent played this well like a Fergie, Mourinho etc all would do