First of all, I would disagree with the word carnage. I'm not on my trading computer, so can't say for certain, but I don't think we've had a day exceeding - 5% down on the S&P 500. While we're down on the year and there's been plenty of down days, this is a very controlled and calm bear so far. Not only that, but it's a bear that's been forewarned well in advance. No black swans here. Only a yawning bear.
I would think of seasonality as a supporting parameter. It worked well in September. However, I think that nothing have changed fundamentally as the FED stopped juicing the markets and that's why we're at these price levels. Unless they do or say something new following that meeting come Monday, I don't see why this is going to bottom out anytime soon.
I may easily be wrong about this except the first paragraph.