>IE8 has a feature that allows you to turn on additional developer tools. I turned it on, but now can't turn it off. Anyone know how to kill it?

You can try to disable it through the group policy http://technet.microsoft.com/en-us/library/cc985351.aspx.

Launch gpedit.msc

go to Computer Configuration, Administrative Templates, Windows components, Internet Explorer, Toolbars

set Turn off Developer Tools policy

--sb--