Well… this sounds a bit ‘gnostic’, if you don’t mind me saying so. What I mean is that some gnostics (as dyed-in-the-wool dualists) used to claim that the body was sinful while the soul was not sinful. Therefore, sin comes from our corporeal, rather than our spiritual, self.
The Church doesn’t agree with that assertion. We don’t assign sin to the “body” or the “soul” – sin is a human problem.
So, first off, I would disagree that concupiscence is a bodily problem.
That being the case, unless you object, I think I can answer your question simply: “what happens to the body”, you ask? It gets buried. It returns to the earth from which it came – “ashes to ashes, dust to dust”, as it were.
(Aquinas would assert that, although the souls of the dead can attain to heaven prior to the eschaton – and therefore, prior to the point we receive our glorified bodies – there is something ‘incomplete’ to the experience of heaven for us, because we’ve been created to be body/soul composites. Therefore, it is altogether fitting that, in eternity, we once again become body/soul composites. Does that come close to addressing the question you have/
Hmm… just thinking out loud, but I think I would be concerned about a priest who doesn’t teach public revelation, but instead, teaches private revelation, especially if it’s private revelation that hasn’t been officially approved by the Church. Is he a diocesan priest or a religious order priest? Which diocese or religious order is he from?
I’ll have to look them up… thanks!