Very much enjoyed this story. The set up with a man setting out to fulfil prophecies that don't *quite* mean the things that everyone thinks they mean, and the way that the protagonist then has to come to terms with a result so very, very different to what he had expected was masterfully done.
I have two gripes, however. First, the audio. Alasdair does his usual masterful job of narrating the story, right up until the very end where he drops the volume and whispers the last critical word. I had to rewind and pump the volume up to try and hear what he said, and when that failed I had to look up the text of the story online before I got it. Which leads to the second gripe. Chastity does not mean not having sex at all, it means not having extramarital sex, so that the Chosen One being a Bastion of Chastity in no way rules out her (or him) from marrying and having a regular family life. The word the author meant to use, I think, was "celibacy".
That said, my gripes are minor and easily overlooked beside the humour and cleverness of the story as a whole.