As I was trying to get set-up, I could see that H1 was in the INJECT SQUEEZING state (after a lockloss about 3.25hrs ago) . So I was getting ready to focus on squeezing), but within a minute or two H1 was back to Observing automatically! Perhaps this was a timer wake up call from being out for so long, because on Verbal, everything looked normal for H1 for the reacquisition. Going to feed the dog breakfast (and go back to sleep...hopefully).
Looks like this was just an instance of the 2-hour timer in H1_MANAGER for not reaching observing expiring just minutes before reaching low noise. There were about 3hr15min between the last lockloss and getting back to NLN, but that timer restarts after an initial alignment is ran (which had happened), and it took 2hr2min to reach NLN due to a couple locklosses on the way up, so no actual issue here.