I almost took a wrong turn myself heading to nyack and I know of another group that ended up in NJ on their way to the last rest stop. Agree signs were not as clear as they should have been.
Last year, the medio course was just a shorter route of the century course meaning that there were a lot of riders for 70 out of 100 miles. In retrospect, I think I prefer that- you KNEW something was wrong if you didn't see any other riders. Also, there were more people to talk to and more bikes to admire.
I literally saw 5 SEVEN's before I even reached the second rest stop. One had one of the coolest paint jobs (a lady's pink and mint green) I had ever seen.
I also saw a madone at the bottom of Bear mountain whose chainstay looked like somebody took a hacksaw right through it. He's VERY lucky he didn't start his climb

.
There was some seriously nice hardware out there. I was generally surrounded by top end-machines.
When you say that the chainstay looked like somone had taken a hacksaw through it, was he riding it? I'm guessing not, must have been a catasrophic failure due to hitting something, right?