Too be fair, Franky Schaffer has not renounced Christianity (at least the last time I checked). He still claims to be a very liberal Christian.
Besides that I have nothing kind to say about the man, because he constantly promotes an anti-evangelical message incorporating the latest MSNBC talking points of the week. A very dangerous person, who while being very intelligent on his own, seems to let the Democratic Party do most of his thinking while putting his own crusade against the religious right into the mix.
Franky is in the “mist of platitudes” that C. S. Lewis wrote about, which is what happens when Protestant faiths degenerate. As to what platitudes, seems that the ground is no limit.