Wow, thats kinda retarded and makes no sense. I advise you to read the article and post a comment at the end. It asks you if you believe in the god of the bible and if you believe if the bible is the word of god with a 1 thru 5 scale of belief.
Since we are speaking English let's look at the dictionary definition of Atheist.
"A person who denies or disbelieves the existence of a supreme being or beings" and Theism
"1. the belief in one God as the creator and ruler of the universe, without rejection of revelation (distinguished from deism).
2. belief in the existence of a god or gods (opposed to atheism)."
Atheist is the antonym of theist, therefore they are mutually exclusive terms and can not coexist. I have found for the most part the majority of people are stupid and do not understand the English language it is like sexual and asexual, can't be both sexual and asexual.
The prefix "a" from virtualsalt.com
atheist, anarchy, anonymous apathy, aphasia, anemia
Therefore Atheist is Theist with the "not" prefix. So you can not be an Atheist with a belief in God, it is a contradiction in terms.