[Patrick, JeffK, Jenne]

It looks like either SR3's OSEMs jumped, or its oplev jumped, after this big earthquake yesterday.  This was causing problems with SRC_ALIGN during initial alignment, since SR3 wasn't really pointed the right way.  This may have contributed to the problems with locking at LowNoiseASC over the last day or so, if other optics were being forced to follow, so the SRC was a little wonky.

Normally when one is having trouble with SRC_ALIGN, you can make sure that the SRC optics are all at their witness positions from the last lock.  This didn't work this time.  SR3 has a "cage servo" to keep the pitch OSEM witness reading constant.  Since there was some kind of jump, the witness sensor probably changed, and then the servo moved the optic to keep the witness constant.  You can see in the pitch oplev that it looks like SR3 moved about 3/4 of a microradian.  In yaw, which does not have a cage servo, the oplev stayed the same, but the OSEMs saw a jump.  Patrick moved SR3 closer to its pitch oplev value from before the earthquake, and we were able to lock SRY and move on with alignment and locking.