is possible kitz did it herself to protect fast path following an ES burst, but if it wasnt preceded with an ES burst, then looks like an actaul outage.
But as black sheep has said many times this can be a blessing, as we know kitz has had ongoing issues for a while, but not able to get fixed as they not "bad enough" to be fixed, a complete outage will of course trigger corrective action and may resolve the ongoing issues as well.