I'm also near Detroit and am watching the trackers and I'm pretty sure I just saw N831AK take off from Troy Oakland in violation of the grounding order. I wonder how common that is.
I saw several flights taking off actually. Like this one from EWR. https://globe.adsbexchange.com/?icao=394a08
I live in the general area of you too. Nice to know that there are Detroiters on here.
It doesn't look like the stop really applied to VFR flights, so I wouldn't expect an old Glasair taking off from a municipal airport to be affected.