As wifikitten stated title is misleading. The couples married before the appeal took effect are now legally married. However, ssm remains illegal in Michigan outside of those 300 initial couples.
Ah, I see. But isn't the state's appeal on these 300 since last year the only thing blocking the court ruling?
No, they are separate cases. After the ban was overturned a stay was put in place in order to allow an appeal. The appeal was then heard by the 6th circuit court, and the court ruled in favor of the state, and against the ban being overturned. The 6th circuit is the only court to do so, and will likely be overruled by the Supreme Court In June.
However, while a stay was issued for an appeal, the stay wasn't granted right off the bat and SSM was legal in the state from the time the ban was overturned to when the stay was granted. During that time period 300 SSM couples were legally married. The state tried to argue that because SSM was illegal once again in the state, the marriages performed during the time period when SSM was legal should not be recognized. The state lost that case, and appealed it once again. However, Snyder dropped the appeal.
The dropped appeal by Snyder, legally recognizes the marriages performed in the state during the short period of time when SSM was legal, but doesn't overturn the ban currently in place.