Not really. More specifically, I'd say a "non-practicing Muslim, practicing as a Christian." Or rather, now he is apparently practicing as a Christian, and was thus previously for 20 years via Pastor Wright whilst also being a Muslim Apostate.
I take my viewpoint whereby just as Jews are said to receive there religious status through the mother (whether they like it or not) Muslims are said to receive it through the father. As an analogy: Michael Jackson may look white .... but he started off black. He may or may not be in denial about this fact, just as his fans may or may not acknowledge it too.
Some here on this forum may have been misled or duped (either willingly or via manipulation) on the notions now discussed.
"In sum, Muslims puzzle over Obama's present religious status. They resist his self-identification as a Christian while they assume a baby born to a Muslim father and named "Hussein" began life a Muslim. Should Obama become president, differences in Muslim and American views of religious affiliation will create problems."
http://www.jewishworldreview.com/0808/pipes082508.php3