I have, but I've also noticed no clergy has been questioning the tenets of what he seems to assert is a distinct denomination, believing that Jesus was a black persecuted by white "garlic nose" Italians.
The issue of Liberation Theology really hasn't been explored yet, in the context of Obama as a practitioner. Nor has it's, and Obama's connections to Marxism. Remember his political mentor was Frank (Davis-last name left out of his book), a poet and Chicago political organizer who moved to Hawaii, where Obama met him. Also an admitted member of the American Communist Party. And Obama followed in his footsteps. Consider why someone from Indonesia and Hawaii, who went to school in California and NYC, ends up as a political activist in Chicago. My guess Davis was the connection.
At least that's how Obama told the story.