Spotflux doesn't play nice with Tunnelblick

I recently gave Spotflux, a free VPN tunneling service, a try on my Mac.  I loved the experience -- extremely high speed and unlimited bandwidth, but I noticed that I could no longer use my beloved Tunnelblick VPN client.  When attempting to connect to a network with Tunnelblick, it errored out:

  openvpnstart returned with status #226

and left this in the log:

*Tunnelblick: openvpnstart log:
 Loading tun-signed.kext
 stderr from kextload: /Applications/Tunnelblick.app/Contents/Resources/tun-signed.kext failed to load - (libkern/kext) kext (kmod) start/stop routine failed; check the system/kernel logs for errors or try kextutil(8).
 stderr from kextload: /Applications/Tunnelblick.app/Contents/Resources/tun-signed.kext failed to load - (libkern/kext) kext (kmod) start/stop routine failed; check the system/kernel logs for errors or try kextutil(8).
 stderr from kextload: /Applications/Tunnelblick.app/Contents/Resources/tun-signed.kext failed to load - (libkern/kext) kext (kmod) start/stop routine failed; check the system/kernel logs for errors or try kextutil(8).
 stderr from kextload: /Applications/Tunnelblick.app/Contents/Resources/tun-signed.kext failed to load - (libkern/kext) kext (kmod) start/stop routine failed; check the system/kernel logs for errors or try kextutil(8).
 stderr from kextload: /Applications/Tunnelblick.app/Contents/Resources/tun-signed.kext failed to load - (libkern/kext) kext (kmod) start/stop routine failed; check the system/kernel logs for errors or try kextutil(8).
 Error: Unable to load net.tunnelblick.tun and/or net.tunnelblick.tap kexts in 5 tries. Status = 71

Apparently, the kext (driver) that Spotflux loads is incompatible with Tunnelblick and prevents Tunnelblick from loading its own kext. The solution is to unload Spotflux's kext and try connecting via Tunnelblick again.

Let's first run kextstat in Terminal to ensure we've got the offending kext loaded:

 
kextstat | grep spotflux
  121    0 0xffffff7f82231000 0x6000     0x6000     com.spotflux.Spotflux.tun

Then, let's unload it via kextunload.  This requires sudo.

sudo kextunload -b com.spotflux.Spotflux.tun

Once unloaded, Tunnelblick will be able to load its kext and connect as usual!  This will need to be done every time Spotflux is launched and you wish to use Tunnelblick afterwards, unfortunately.