One of the nice things is that in rationalising it, he's become less of a darker-than-dark villain, and actually someone who's kind of on the side of the angels (although I'm trying to work out an ending now that isn't a cop-out. This is difficult...), and also something happens that can kind of tie into a future story that I've got in mind...not a sequel as such, but just something that's set in the same universe, so to speak.
Anyway, I've sort of decided that I'm going to dust down my old writing journal/community, brider_writing, as a place to post bits of this as a work in progress. Because I'm vaguely hoping/intending that if/when I finish this I might make some kind of attempt to get it properly published (or failing that, at least self-publish), I'll be posting there behind a Friends lock, and I would ask that anyone who reads the comm respect my wishes and not share anything wider than the comm. However, if you'd like to join the beta/readthrough team for this and possible future works of mine, feel free to join the comm.
(If you're reading this via Facebook or Twitter, you'll have to set up a Livejournal account first. This can be done free of charge, and you don't have to actually post on LJ to lurk on the community. However, if you do that, please let me know who you really are! If I don't recognise you, I'm not likely to let you join the comm, and it's moderated so that's kind of an issue...)