For which you need another Mac, and the knowledge of how to do it. I do have two Macs but not the knowledge. One thing I did notice when one of them freaked out is that I could still access it from the other via file sharing, but only the file system and not with screen sharing. They must fix this. It's beyond annoying, it's embarrassing.
Just a free SSH client on for instance your iPhone will do. Then to kill distnoted, enter:
$ sudo killall -SEGV distnoted
$ exit