Tunnelblick/Viscosity random connection issues even when not connected to VPN
It should not be necessary to "uninstall", "unload", or "quit" Tunnelblick to make your issue go away.

In some situations, where the OpenVPN configuration itself is faulty (and it sounds like yours is), you might need to have Tunnelblick "Reset the primary interface after disconnecting". You can do that by selecting the configuration(s) you wish to modify in Tunnelblick's "VPN Details…" window, then clicking the "Advanced" button and putting a check in the corresponding checkbox.

For further Tunnelblick support, you should use the Tunnelblick Discussion Group at

https://groups.google.com/forum/#!forum/tunnelblick-discuss

Before you post to that group, please read

https://code.google.com/p/tunnelblick/wiki/cBeforeYouPost