Nah, no saves beyond the alternating quicksaves. I'm not bummed out about it, I experienced 99% of the mission, just thought I'd bring it up as somebody who missed that note at the start (somehow, even though I looted the coins on the table) if that was even the catalyst, couldn't think of what else it could be after reading others' experiences in this thread. I sapped the priest but that's irrelevant: my not-Garrett is trapped in that tower until he loses his mind and swan dives off the top.