dehg5776
The shaft sheared at the point where the drive shaft extends out of the gear box. Everything forward of that is missing.
Sounds scary. That kind of failure sequence likely results in substantial "wobble" of the prop as it falls off to one side and finally separates off-axis. In that case it does not fly straight ahead to fall off in a gentle arc, but instead flies sideways or up or down, endangering the airframe. I'd druther it flew straight ahead!