When we got to Spooner Lake we encountered a group of about 5 riders who had started with us. We stopped very briefly and then rolled past them. The trail became a fireroad at this point and quickly started to descend. The first portion of the descend was too steep for me. Without my front brakes I discovered that I could not stop my bike. I was able to keep my speed below 20 MPH but my rear wheel just kept rolling. I started weaving and pulling on the rear break continuously trying to stop but the slope was relentlessly dragging me downhill.
After about a mile I managed to stop my bike. I decided to try hooking up my front brake and letting it drag for the downhill section of the ride. Unfortunately, I didn't check to see what the brake was dragging on. After about a mile of downhill my tire popped like a gun going off and after a brief inspection I discovered that the brake had rubbed through the sidewalls of my front tire and then ruptured the tube.