Daniel, Ed, Yuta, Stefan, 

After this morning's boot fest we noticed that the IMC reflected beam was completely misaligned, missing camera and WFS, and barley hitting the LSC diode. Interestingly, the IMC still locked with good build-up. We checked HPI, ISI and all involved SUSs for any drift. None showed any. Also, the PRX cavity still nicely locked. So we concluded that some mirror on IOT2L must have moved, and realigned that whole beam path. Everything worked fine again afterwards.

In the process we also had accidentally moved an ASC POP picomoter (#6) horizontally (yaw). We were able go find the beam again, but once again confirmed that these picomotors are hugely asymmetric, i.e. the counters are only useful for suggesting an axis and direction.