You aren't accustomed to roads like that. The fast curve came up on you unexpectedly. I've noted that drivers here in North Mississippi drive stupid fast on country lanes. 70 mph is common where the speed should be 45 mph. Few of them will attempt to negotiate a bend in the road. They drive way over their head, then slow to a crawl for a gentle bend. For Mikey, it may not have happened if you were riding alone. A group ride with a bunch of canyon carvers can be very dangerous. The majority of the group is experienced at very brisk riding on mountain roads. Speeds may actually increase as the road gets interesting. You have to pretend you're alone. For example, if John Chaves is leading the group in a crooked portion and I'm behind him, I stay about 2 seconds back. I maintain awareness of his position, but focus on the road looking through him rather that at him. I'm always looking far up the road doing my thing. If someone else is faster, they're always welcome to move ahead of me. I think we all have a propensity to focus on the bike ahead and that can get us in trouble.