It appears this command is functional:
sudo ectool --interface=fwk fanduty XX
Also,
sudo ectool --interface=fwk autofanctrl
does restore automatic fan control. I am considering writing a script and a companion service with rules for pushing the fan to high run for certain applications (X-Plane, Handbrake, etc) that seem to get just a little more fps work done with the fan pre-spun up to 100% vs in auto…