Knowing I had 90 days to figure out the licensing, I installed RDS. Seems I didn't need to as Administrators can log in anyway. Now it seems we don't want to buy any more licenses so I figured I would uninstall RDS and just use the administrator login angle. But on reboot the uninstall gets to about 90% then fails and I get the very scary continuous reboot situation. That seems to tire itself out after about 6 attempts.
Anyway - now the 90 days are up and I can't remote in at all.
This link suggests it can't be uninstalled because I created a broken Remote Desktop Server install by attempting to install on a domain controller, unaware that I shouldn't.