Warbird Information Exchange

Multiple witnesses located near the accident site reported observing the airplane flying on a north eastern heading at a low altitude when it performed a "barrel roll." Several witnesses reported that after the maneuver, the airplane "wobbled [from] side to side" before the airplane's canopy separated. Shortly after, the airplane entered a steep right turn, and descended into the ground in a nose low attitude.

I found the preliminary NTSB report, but its pdf and the site won't allow me to upload it?