Fixed it. I ran the shutdown command then started killing likely suspects in in activity manager. Turns out kextd was the culprit. I thought. would have to go back after restart and kill it every time I wanted to restart until I found the offending kext but after that initial quit command everything is functioning as it should.
I have a similar problem, but it's beyond the scope of this answer. First, I have many, many orphans nodes, and as noted, there is no way to get rid of them. Next problem is probably my creation by installing Mojave over beta High Sierra. BootCamp, Windows 10, operates as it should and there are no issues with BootCamp. However, I cannot shut down Mojave. It goes into a reboot and shows me, what I think, is a kernel panic, but proceeds with a couple of warnings to restart. Indicates that I did not shut down properly.
Tried the first, three, terminal command as above and it does, indeed, "shutdown," but directly into a reboot. I can live with it for now, but I would like to rectify it without a clean install.
Any thoughts would be appreciated!