He is rarely asked to clarify, he often gets asked what his position is, often with the goal of classifying him into the "ultra-religious right wing cook" which he understandably never answers outright. He also doesn't want to lie and his viewpoint on Christianity is rarely contained in a single sound bite.
He's admitted to not being a Christian in the strictest sense of belonging to one or another church or believing in the unerring of the Bible but he does believe that the Judeo-Christian message is important in our society and has influenced our morality and it's hard to separate it both from our collective as well as his individual psyche.
I think he struggles with disconnecting the influence of Christianity in his own thinking and he hasn't made up his mind as to whether the whole thing is a psychological byproduct or something he should actually believe.
I don't know the man personally but I do understand where he is coming from when he doesn't want to expound on his position, these days people just want to classify you as religious and then they can safely ignore you and your position because you aren't an atheist.
I am an atheist myself but I do believe that there is a morally superior message in the Judeo-Christian faiths compared to eg Islam or Buddhism which has caused the West to develop as it has.