Throckmorton: "Barton and Barna: If We Don’t Do Something We Didn’t Do Before, We’re Doomed"

From Warren Throckmorton here. A taste:

There is nothing new about this. This is the same Christian nationalist doctrine Barton has pushed for decades. Unless we do something we didn’t do before — make Christian doctrine the “center of our process” — then we are doomed as a nation. This simplistic prescription is based on a tendentious reading of history which is nothing new for Barton. For instance, Barton says the Constitution quotes the Bible verbatim. This, of course, is not true but is consistent with the faulty reading of history Barton wants us to believe. If he can get us to believe we once had the evangelical God at the “center of our process” and once self-consciously operated “in strict accordance with His principles,” then Barton has leverage to press these concepts today as political objectives.

David Barton has apparently co-written a book with George Barna. Is this the same George Barna who is a respectable Christian market research guy? If so, what on God's green earth possessed him to co-write a book with a figure as tarnished as Barton?