This article was in my local newspaper today. Looks like the guy was hurt pretty bad when the log he was dragging flipped up onto him. I can't really visualize how this might have happened.
(broken link removed to http://www.mountvernonnews.com/local/10/01/21/mv-man-injured-when-log-flips-on-him)
(broken link removed to http://www.mountvernonnews.com/local/10/01/21/mv-man-injured-when-log-flips-on-him)