I am more interested in why this error is happening, than whether it is actually safe to remove nodetype. However, it would be good to have confirmation that I can just blow away the directory.

drush dis nodetype Nodetype is already disabled. [warning] There were no modules that could be disabled. [ok] root@atlas:/var/www/sites/all/modules# drush uninstall nodetype The following modules will be uninstalled: nodetype Do you really want to continue? (y/n): y nodetype is not disabled. If active, use `disable` command before [error] `uninstall`. An error occurred at function : drush_pm_uninstall [error]

Luke