by Ken Task.
Not familiar with your Virtual stuff ... nor proxy ... but ....
There is a command line only script in code/admin/cli/ called uninstall_plugins.php that will help with this.
Manually removing the mod/lanciau doesn't completely remove as
there are tables in DB related to that plugin as well as references to it in mdl_config_plugins table.
Script above helps with DB stuff.
run like php uninstall_plugins.php will bring up the help screen.
'SoS', Ken