While running the right line at Sunshine, I caught the right shelf early causing me to fall off early. While doing so I tucked and flipped landing on my back on the rock. After the crash, I washed over the bottom rocks downstream. I pulled my skirt and resurfaced. Two or three boaters pulled me out in the river right eddy. I was evacuated out of the gorge with the help of paddlers and the EMS in a litter on a backboard up the pulliam creek trail. My only injury was a T-12 Compression Fracture.