I'm the one who dropped it to 0 temporarily.

I was concerned with the profitability as well (its stupid low), and started digging around.  Looks like our main database started acting funny at some point this morning, causing some chain reactions down the line.  Once I noticed (30min ago), I did an emergency restart of everything (db, endpoints, etc), which involved a few minutes of downtime (0 hashrate).

Everything should be up and running now, and I'm looking to see how much of the damage that was done is recoverable (just not processing blocks), how much of it is just stat reporting (not being able to pull stats from the db and thus not reflecting correctly), and how much is essentially actually lost (profitability stats couldn't be updated, thus switcher has bad data to use, thus picking incorrect coins, and just mining for shit for a while).

Essentially, I'm looking into it as we speak, will hopefully know more in the coming few hours.  Sorry ahead of time.