Running and testing out the 391 for the 1st time cutting some white Cedar, this one was somewhere around 85 to 90 feet tall. New chain was super sharp. Tree was hollow from the stump up and required a bore cut. I'd say it was leaning at least 40 degrees off vertical. (Don't pull on the saw like I did here, rotate it in either direction instead.)
The log pieces were separated but heavy enough to slide downhill and pinched it. I don't edit my videos, you'll see my mistakes. Wet rot mixing with the rest of the dry wood makes for a sticky situation.

*FYI: I definitely don't suggest doing this or anything like it without safety gear, whatsoever. I couldn't find my helmet but at least had safety glasses. Work at your own risk.