I was listening to the KOSH tower comms via the internet stream when this happened, they had to shut down all traffic which left a lot of unhappy folks on the ground and in the air. But the ATC guys were real pros and it all worked out OK as they were able to open up Runway 27 shortly and started expediting planes back off the field. Hope he comes out OK.
A news video interview of witness said the Beech Premier was approaching 18/36 at slow speed, wings rocking, then wings went vertical, right wing hit ground and cartwheeled with no fire.
Damned lucky to walk away from that.