I think you guys might have the wrong idea. Shia Labeouf might be a punk for all this nonsense but his on screen presence is very fun to watch.
Just cuz he's a jerk in public doesn't mean his character in the movie reflects that.
Look at Robert Downey Jr. Been in jail time and time again for substance again. But he is awesome on screen.
This will change my view of what he's like as a human being but part of my enjoyment for Transformers and probably Transformers 2 will be because of his charisma and his comic timing as Sam Whitwicky.
This topic does not reflect how Transformers 2 is going to turn out when its all done filming and in the can. The movie is still going to be awesome and his character is going to shine just as much as if he didn't get arrested for DUI.
He's a dumbass though.