* [Delete Google Plus profile](https://support.google.com/plus/answer/1044503?hl=en) - stops the syncing of circles and friends
* Revert to old Google Talk
* Unlink Google account from System Preferences -> Internet Accounts
* Clean up contacts in http://contacts.google.com
* Open messages, select all, remove
* [Remove Messages related plists](https://discussions.apple.com/thread/4387998)
* Re-add Google account to Internet Accounts
* Open Apple Contacts - this should now pull down a clean list of your contacts
* Open Messages
* Open GMail, from the chat, message the contacts you want to show up in Messages. This will send an invite to Messages that you can accept