I'll tell you how I did it for Wikipedia. First, I removed my email address for password recovery. Then, I opened notepad and mashed my keyboard. Then I copied the rather long string of random characters to the clipboard, went to the password reset screen and then pasted it into the password and confirm password editbox. Then I hit update, and then I closed notepad without saving, and then I rebooted my computer.
Ta-da! No more Ta bu shi da yu.