There is a tree down across the trail before you reach the S8 marker.

Yea, and covered in poison ivy - tread carefully.

Rode Sherman today at about 1:00. The trail itself wasn't bad at all, just a few puddles in a few spots. The bigger issue was the debris on the trail. I moved and picked up some of the bigger stuff as I rode all loops but there is still quite a bit of debris-smaller branches, leaf run off and and sand runoff on the trail.  There are also quite a few trees down:

From what I can remember there is 1 on Roller coaster, closer to the beginning (9-12 inches in diameter), 3 on main: one before the wooden bridges/jumps, one in the middle-can't remember exactly where, and one near the end after you come out of lake loop (it's actually the top of a larger tree that has 2 large branches completely blocking the trail-you have to maneuver and snake your way thought it). The other one is on Lake loop-on the double track after you first head in.
I would say they may all be able to be handled with a hand saw but the job would take a little bit of work...piece of cake for a chainsaw.
Be careful out there...another rider mentioned on his second loop a large branch must had just fallen because it wasn't there for his first lap...lot's of branches may be loose and could fall at any time.