Append ?contents=1 to your querystring. Example: http://www.foo.com/default.aspx?contents=1 Try it. It’s cool. Thanks Shane Young for pointing this out in our Survival class. 🙂
We were talking in class about deleting closed web parts… it’s a pain to try to get to the UI where you can delete "closed web parts." I find that most page perf issues I see are related to bad web parts that are actually closed.
I’m not a fan of any closed web parts. I think it’s a poor feature. Just my 2 cents. The idea of closing web parts for private views… just didn’t work like it was designed and has more downsides than up.