Why did Oprah leave Obama's church?

Ever since I heard that Oprah Winfrey was once a member of Chicago's Trinity United Church, I've been waiting for someone to stick a microphone under her nose and ask her why she quit. If she admitted it was because of Jeremiah Wright's hate filled sermons, it would severely undercut Barack Obama's claim that he wasn't aware of such things despite his 23 years with the church and intimate relationship with Wright. I have no idea why no one is pushing this now, but it turns out that Newsmax reported on this quite some time ago:

Obama’s most famous celebrity backer, Oprah Winfrey began attending Wright’s church in 1984. Last year, Newsmax magazine reported that Winfrey abruptly stopped attending years ago, and suggested that she did so to distance herself from Wright’s inflammatory rhetoric. She soon found herself a target of Wright, who excoriated her for having broken with “traditional faith.”

And there is further evidence to undermine Obama's claims:

The Reverend Wright’s anti-white theology that Senator Obama expressed surprise over is evident on the church’s website. The site says the congregation subscribes to what it calls the Black Value System, which is described as a disavowal of “our racist competitive society” and the pursuit of “middle-classness.” That is defined as a way for American society to “snare” blacks rather than “killing them off directly” or “placing them in concentration camps,” just as the country structures “an economic environment that induces captive youth to fill the jails and prisons.”

It's tough to believe Obama was blind to all this for 23 years. If he isn't lying, he's demonstrated a degree of unawareness and naivete that we cannot afford in a president.