'Terminator: Salvation' director McG tells ET that Christian Bale is the ultimate professional!

Earlier this week, an eyewitness on the set of Bale's new film, "Terminator: Salvation," confirmed exclusively to ET that the star went on a loud tirade in front of the crew on the set last week and it seemed "unwarranted."

Now, in an all-new interview from Comi-Con, McG, who is directing 'T-4,' tells ET that if anybody is going to get hotheaded on the set, it is going to be him.

As for Bale's arrest in London, McG says they talk every day, but only about work.

Bryce Dallas Howard, who plays Bale's wife in the film, tells ET that she has never seen anything but professionalism from Bale, saying that sometimes people misinterpret things, which could happen because Bale is an intense actor.

And Howard says that she hasn't spoken with Bale in the past week, but says she is looking forward to working with him this coming week and that she has the utmost respect for him.