Drop the access to encrypted libraries

Is there a way to drop the access to encrypted libraries when needed?
If the encrypted library is synced and one wants to drop the access to it, there should be a way just to do it. A kind of a kill-switch. Something like “Drop access” as a menu option when right-click on an encrypted library, and local files in the synced directory disappear.

There is no such option.

You could delete the computer under Admin -> Geräte and enable the option “delete all synced folders on the device”, but no option for just one libary.