Thanks, David.
Yes, I take your point about the opposition to Pomo coming from both sides - I recall that Alan Sokal was firmly of the Left when he launched his attack on
Pomo in Physics .
But as the article says:
"... the roots of postmodernist theory which, he suggests, descend into the soil of late 1960s radicalism, a "highly dubious" period in French intellectual history. This is important because postmodernist theory is
often regarded, with some justification, as a philosophical delivery system for a left-wing agenda: the rejection of imperialism, the defence of anarchist notions of the state, opposition to constructions of identity based on gender or race."
I haven't seen the book yet, so I can't say if his approach falls under your a,b,c or d categories. Given his credentials, I would very much doubt it.