Likely a coincidental, but sometime around the IFO re-alignments over Sunday morning, the SR2 M3 stage shows a large PIT step (see attached).  Ironically (?) the RF45 glitching started really humming about an hour before that according to the latest-n-greatest RF45 glitch monitor H1:LSC-MOD_RF45_AM_CTRL_OUT_DQ.  Unfortunately the alogs for Sun morning are a bit sparse because microseism and a flurry of EQs passed through and relocking was apparently difficult.  Robert reports in alog 23214 from that morning that he put shakers on HAM5 and 6, but not HAM4, so this cannot account for why SR2 would have had some pretty big re-alignment.