FRiend, Crossan is a historian, period.
Whether he is also still Christian (he was a Catholic priest), I don't know, but there are only two possibilities:
Just because, FRiend, you don't like Crossan's historical analyses, doesn't make them "heretical".
Indeed, since you've never read even one word of Crossan's work, what you don't like is what you've heard second, or third-hand about it, evidence on which no possible court in the entire known Universe would convict anybody of "heresy".
Crossan is a historian, not heretic.
Kevmo is an orthodox believer who wouldn't know real history if it walked up and slapped him in the face.
FRiend, Crossan is a historian, period.
***HERETIC, Crossan is as much a historian as Joseph Goebels.