Hey Jason - I also noticed that both the scripts for Authorize.net and PayPal processing are on this confirm.php page. Even though I designated No Payment Gateway in my store settings. I'm guessing that's the problem?
The store is here: store
I've turned off the protected access to that page for now. I'm just testing the store so you can even make an order because it doesn't really go anywhere but the database and I'm the only person accessing it right now.