TJ noted that the beam splitter was oscillating wildly. Glancing at the screen, it looks like the move that we did yesterday to align MICH (alog 42467) moved the BS mostly off of its optical lever PD. So, with a small nudge (maybe a recent EQ? there's a small close one that showed up in our seismic blrms) we've fallen enough off the PD that the oplev loops started going crazy.
I have the outputs of the BS oplev turned off for now. We need to re-center the BS oplev next time Jason has a moment to spare.
The BS OpLev has been re-centered.