David Bentley Hart is a hard man to pin down. At times he is briskly dismissive of "sanctimonious denunciations of 'Constantinianism'" (one wonders who, exactly, he has in mind?); at other times he writes something like this:
When Christianity became not only a pillar of culture, but also a support of the state, and thereby attached itself to that human reality that necessarily sustains itself through the prudential use of violence, it attempted to close the spiritual abyss separating Christ and Pilate on the day of their confrontation in Jerusalem.
Sanctimonious or not, that sounds suspiciously like a denunciation of "Constantinianism", and a well put one at that.