Unfortunately other states in the upper MW/NE are starting to show a similar pattern to Michigan. Seeing it now in Minnesota, Pennsylvania, Ohio, New York, New Jersey. Michigan seems to be leading the way at the moment.
Unrelated to that, and a good piece of information for people on this site, some important research has come out in the last few weeks regarding the vaccines. I believe it was based on the Pfizer shot (but is likely true for Moderna as well), but it suggests that for the first 7-14 days after getting your FIRST shot, vaccinated people are almost twice as likely to get COVID during that time period as unvaccinated people. This is believed to be why many areas across the world saw heavy COVID spikes right after starting aggressive vaccination campaigns. After those 14 days you are more protected than unvaccinated people, and it continues to improve past that. This affect isn't seen with the 2nd shot, likely because of the protection acquired from the first shot.
The takeaway from this new research shouldn't change your mind on the vaccine one way or the other, but if you are a high risk individual, you should consider this and take extra precautions for the 7-14 days after your first shot.