Ha! I found him, now larger than ever after he finished molting in his little nest(the one on the bottom left is a new guy from downstairs) I've been keeping tabs on these spiders all summer. Earlier in the year there was a much larger one in the bathroom that was killed. She turned out to be the mother. Not much longer after that there were tons of tiny ones running around on the ceiling. Lots of them died. As far as I can tell about 5 of them made it to adulthood, keeping watch over various rooms from the ceilings. Now if only they'd kill house centipedes we'd be best friends, but they dominate the floors so they never meet. They also eat spiders. Good thing they're out of season!
Internet slowness makes it impossible to update.