I've accidentally done that before too. I just emailed AW with the correct photo and they fixed it.
However, I have also sent them an entry that never got posted too, so I suppose it depends upon how busy they are.
Thought I might get a faster response if I took this route AW. I entered a photo in the latest contest; but some how sent the wrong one. It is a good photo, byt doesn't jive with the accompaning words. Can you help me correct it? I will change the words or the photo, whichever is easier for you.
Thanks Bob MacPherson