If you installed Happy Dance for aCTF and weren't there when I went over it after the contest, you can remove it by loading Firefox in safe mode and removing Happy Dance from the installed Add-Ons list, trying to remove it while Firefox is loaded normally is not possible.
If anyone is interested in the workings of the extension I will be releasing a legitimate version later this year under the GPL license.
If anyone is interested in the workings of the extension I will be releasing a legitimate version later this year under the GPL license.
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