To answer your question (I don't own the DVD, but have read this before), no there is NO way to watch the deleted scenes without the director's commentary. A Warner boner...
That is pretty lame. It would be nice if they would have at least put the audio in different channels so you could make out the dialog. Its been a while since I've watched them, but as I recall in most you couldn't make out any of the dialog so it was hard to judge the significance of the scene and the impact it would have had on the story.