Still trying to figure out full story, but last night when SEI_DIFF was transitioned to the corner only state, this engaged some filters (for the arm cps diff, which was being disengaged, so nothing weird was actually used) and created some sdf differences, which were accepted. I've fixed the filter settings and made some changes to the SEI_DIFF guardian that should keep this from being an issue in the future. I've also turned the full cps diff back on, I don't think this has an adverse affect on our ability to lock during high microseism any more, and it should be beneficial in high winds like we had over the weekend.

Out of Observe at 17:03 utc, back to Observing at 17:07 utc.