Peace be upon you,
The problem is: Sometimes a developer may throw a Web Part that totally brings down a Web Part page. Brings it down to such an extent that the page won’t even run and you can’t even see the “Edit” menu to remove that offending Web Part.
Luckily, in order to fix the Web page, there is a back door to removing such really smelly Web Parts. Simply go to the following URL:
This page will present you with a menu to clean out these Web Parts from both shared and personal views.
I found this a really nice tip as I really suffered from such Web Parts bringing down the whole page.