So far no success. In fact, it's been a saga.
Revo Uninstaller Pro did appear to uninstall the program, but I wasn't able to install the new version of Easy Tune. I still got the message to "Please remove Easy Tune6 first!"
I figured it would be safer to go back to the restore point before the Revo forced uninstall. However, the restore didn't work -- I got an error message from Windows about my anti virus program. My security application was Bitdefender, so I contacted them and was told I had to uninstall Bitdefender in order to do a restore! Yikes!!
Anyway, I downloaded the Bitdefender uninstaller, ran it, and tried again to go back to the restore point. Windows didn't complain, but Bitdefender was only partially installed after the restore. And I couldn't reinstall over it.
Fortunately, I had kept a clone of my C: drive from just before I installed Bitdefender, so I was able to restore pretty much everything and I'm still trying to get a working version of Easy Tune.