Appzapper can be found at https://www.appzapper.com/. It will unintall motion and then you can start with the FCP install disc. Installer will automatically know that Motion needs to be installed and will guide you through the process.
I found an app called appzapper and it got the uninstall job done.. I reinstalled and… dah dah dah daaah… low and behold my file browser reappeared.. who knows.. Motion gliche or I somehow moved it WAY offscreen?