I was also thinking that it could be a pier flip back, as the target was a 2-panel mosaic, but I have seen a message that mount finished slewing, just before failed plate solve. The clutches were fastened for good, as I usually do.
Attached (as a log file) is a very short section of the Voyager log showing partial sequence of events that I'm talking about.
There could be some hint in these specific lines of Voyager log, but I'm not sure what does it mean:
2022/06/25 03:34:40 388 - INFO - [PrecisePointing ] - [CHECK_POINTING_ERROR_Code ] - Pointing Error Spherical => 00 09 14.92
2022/06/25 03:34:40 399 - INFO - [PrecisePointing ] - [CHECK_POINTING_ERROR_Code ] - Pointing Error Position Angle => 251 17 26.42
2022/06/25 03:34:40 408 - WARNING - [PrecisePointing ] - [CHECK_POINTING_ERROR_Code ] - Error out of range [Max 00 00 18.00 ], retry another time