Came across this & had to post it for you guys. I'm strictly a homeowner that has probably only dropped about 50 backyard trees, but I've never come anywhere close to these screwups.
http://video.google.com/videoplay?docid=-7808769582406517692&q=chainsaw&hl=en
Al
http://video.google.com/videoplay?docid=-7808769582406517692&q=chainsaw&hl=en
Al