Just got through to Apple (wait time - about 20 minutes on hold).
First guy was a tech that was handling overflow calls. He said that my ordering could be "reset" but that part of the site was currently down. He said he knew that the sales department could enter a "back door" and find another way in to reset it. He routed me to that department. The lady typed in my info (wireless number, last 4 social, etc.)... she said the attempt went beyond the "order already exists" page for her and asked me if I wanted her to complete the pre-order on the phone. I told her that I had the unlimited data plan with ATT and I didn't want to lose it. She said it came up on her computer as an option for me and she selected it. No worries. (phew!)
I had her pre-order the phone but she said she couldn't send it to the store as I wanted her to. I had to give my credit card info to her to have it shipped to me on the 14th.
I'm still waiting on an email receipt but she gave me a web order number.
Hope this helps...