I just ran across this and it's a welcome option - you can add "(loband)" to any of the MSDN documentation links on the website and it will serve up a much faster version of the docs. For example,

Instead of:

http://msdn.microsoft.com/en-us/library/cc707819.aspx

Try:

http://msdn.microsoft.com/en-us/library/cc707819(loband).aspx

There is also an option at the top of the page once you've selected this option to persist the low bandwidth view, so all of the pages come up like this by default. I appreciate the treeview when I'm just poking around, but sometimes the site is just painful to navigate to since it takes a bit to render them.