Yupp. I beat on it a couple nights ago. It was having issues getting into gears. Decided to limp it home to CT last night and it stopped moving. Motor just revved free so I shut it down and called AAA. Decided to motivate and start working on it and opened to find this. I don't even know how I should feel about this. Just my luck.
My guess is a screw backed out and somehow caught the disk and sheared off the rest of the bolts into the crank.