I was out there on the 22nd as well. Rode ~30 miles, several laps. On my first lap, I had to clear a bunch of small dead trees off the trail that some idiot was nice enough to place there. This was after the Lost Lake turn off and before the hanging bridge. Other than that, and literally running into another biker (both of us and our bikes were OK), the trails were in great shape for the two weeks I was up there.
Unfortunately, I didn't get a chance to ride Ogemaw Hills. I just liked the convenience of riding RR and then going swimming after my ride.