We talked about this at our EAA meeting last night. One guy in our group heard that it wasn't the stick that broke, but that it was instead an elevator push-pull rod. Also, he said that there wasn't anything bigger than a garbage can lid left of the wreckage. He flew it with trim and determined that he didn't have enough control authority to land it, so climbed to 8,500 and bailed.
There's a shop of our field that does work on acrobatic planes, his included. Apparently he brought in a plane to be recovered a few years ago, and the plywood in the wings had seperated from the ribs from all the strain. That fella flys 'em hard!