How to manually uninstall/purge modules? I have a module Media: YouTube which is being buggy when attempting to uninstall. I disabled it in the modules along with its dependencies, and when I go to the uninstall tab and perform the uninstall operation, it returns a blank screen. I go back to the module page, and it's still there (along with 3 other modules that need this one uninstalled first before the others can be removed).

Is there a general method of purging modules from the backend? I have full access to the server and database as well.

EDIT: Checked logs and found a PHP error:


  [Thu Jan 19 13:12:21 2012] [error] [client 192.168.xxx.xxx] PHP Fatal
  error:  Call to undefined function media_youtube_variable_default() in
  /var/www/drupal/sites/all/modules/media_youtube/media_youtube.install
  on line 19, referer:
  http://vulcan/drupal/?q=admin/modules/uninstall/confirm&amp;render=overlay


Sounds like it's just a badly written module?
This is a known bug. Replace the module with the most recent DEV version, update, and then try uninstalling again