Absolutely not. I am sure he is shrieking and screaming in agony in Hades right now, and in the lake of fire after that. He will not have one moment's rest for all eternity. The smoke of his torment will rise forever. Need I say more?
It see nothing that warrants saying he was even once a passionate Christian, while despite the attempts by atheists or others to make men such as Hitler and Stalin to be "Christian," while vehemently denying atheism had any blame in Communism's atrocities (based upon their objectively baseless moral reasoning), none of them could be based upon even basic criteria for being so in Scripture, since that is where the term if first recorded.
http://books.google.com/books/about/Christianity_and_rabbinic_Judaism.html?id=dWbYAAAAMAAJ