I am pretty much an expert at trying things I have no business doing and luckily surviving. If you're bound and determined, be like me and assume you're going to get it wrong. Go really slowly, use a long bar to keep your vital organs as far from the tension as possible. Pound in a wedge as soon as you have room if you think if your bar might get pinched, go really slowly. Think every step through, don't climb on the stuff if you don't have to, wear a helmet, and go really slowly.
Woodchuck, I like you, and have received very helpful advice from you in the past, but why start in with the fallers on the logging forum? I'm sure people who do storm cleanup for a living are very good at blowdown, and I'd bet people who log for a living would be pretty good at dealing with blowdown as well. We should all start by agreeing that that huskstihl guy is probably not good at handling blowdown. I can tell you from experience, he doesn't listen, or work well with others