He might be Christian. After there is salvation, there still remains the threat of demonic influence, although demonic possession of the soul is no longer possible, God might still turn one over for sifting.
Another interesting facit is that as created persons with soul and spirit, we also have volition. Not all things are controlled by Satan, and many evil and good things occur independent of God and Satan by man. They might be good for nothingness, but still qualify a good, merely lacking in divine good if independent of Him.
Matthew 12:43-45
http://www.usccb.org/nab/bible/matthew/matthew12.htm
43
"When an unclean spirit goes out of a person it roams through arid regions searching for rest but finds none.
44
Then it says, 'I will return to my home from which I came.' But upon returning, it finds it empty, swept clean, and put in order.
45
Then it goes and brings back with itself seven other spirits more evil than itself, and they move in and dwell there; and the last condition of that person is worse than the first. Thus it will be with this evil generation."