Will I win?

The book has, yet again, foiled me. Instead of making more pages I spent the morning giving up a scene and an entire plot line. I have trouble giving up on something, especially if it’s cool. But, I want to save this cool idea for another book where it can be on stage for longer than a hundred pages. One of my regrets is that in Narcissus in Chains the main bad guy and his being a panwere was only on stage in full explanation for such a short time. Such a nifty, original, idea really deserves more on stage time, but, the book was where it was in the plot by the time we got the big revelation. No help for it. Originally, I had Anita finding out about Chimera fifty to a hundred pages sooner. Which would have given us longer to play with the whole panwere idea. But, Anita and the gang were too tough for my bad guys. They got away instead of being captured, so, the big reveal had to wait until later.
I don’t want to look back with regret on another nifty idea that didn’t get to be trotted out for more than a few pages. But, now that I’ve vetoed one entire plot line, and taken a completely different tact for the end of this book, I’m a little puzzled about how to precede. The nifty idea was a late addition to this book, unlike the whole Chimera and panwere thing which had been planned for Narcissus in Chains from the beginning of the book. Whenever something comes in that is a major plot point when you are a hundred pages out from the end of a book, well, letting major plots out of the bag that late in the game is how I ended up with some thousand page novels. (Please, bear in mind that the page count of a draft of a novel has little to do with the printed page count, so don’t go searching through the books for the thousand page opus. A printed thousand pager would have to actually exceed a thousand pages in draft.)
This book was originally supposed to be about two hundred pages, remember? It was supposed to be JASON, like MICAH. Instead it’s been about five hundred pages, cut by eighty, and now we’re back up to 430 or so. But if I stay with my original plot, with some additions, obviously, it’s still going to come in at about five hundred. But, it will still be Jason’s book. It will still tell his story. Which was what interested me in the plot in the first place. Damned vampire metaphysics making my plot more tangled. Damned shapeshifter culture making my book longer. Damned new characters expanding the process. Damned character development adding pages. Damned major plot revelations for the over arching series story arc.
It’s all good, but damn, the book is trying to become about two different books. I’m trying to put my foot down, and keep to just one book. Will I win? I’ll let you know if I figure a way out of the scene I just finished yesterday. If I have another day where I get no forward progress then I may have to bow to the secondary plot. But, may I say, that I do not have time in my schedule for this book to double in size. My stress level cannot deal. So pray for a happy ending to this scene and a way to tame this plot.