I'm getting the following error when I try to disable a plugin:

$ sudo su
$ dokku plugin:disable logging-supervisord
rm: cannot remove ‘/var/lib/dokku/plugins/enabled/logging-supervisord’: Permission denied

The link mentioned (and all other links in that directory) are owned by root, and I'm running dokku as root, so dokku must be changing it's user (right?).

FWIW, I was able to remove the plugin with

$ dokku plugin:uninstall logging-supervisord
-----> Plugin logging-supervisord uninstalled