Tim,
Actually the area that slid burned two years ago, and it is considered one of the most unstable areas in the canyon. Unfortunately, an air tanker crashed trying to drop a load of flame retardant. Our hearts go out to the pilot who lost his life trying to save our small townships.
air tanker crash Yosemite National Park does have an extensive fire program that includes controlled burning.
Yosemite Fire Info A big problem now is that many of our trees have succumbed to bark beetle damage which will make for a tinderbox come summer. I agree that in this day and age fire management is as important as ever. My graduate work was looking at lodgepole pine communities that came back after the 1988 Yellowstone Fires.
I also hope to get out this weekend for a Valley drive through and of course a ski at Badger Pass. When the road closed I had to get work together for my students that live in Yosemite Valley. I'm sure it will happen again.
Hugh