How to fix the Google Docs scam if you’ve already been hacked

There's an incredibly dangerous Google Docs phishing scam sweeping through the internet today. It uses Google's own Apps system to compromise email accounts, so thousands of users are falling victim to it.
You can read our original post on how it works and how to avoid it, but that doesn't really help if you've already clicked the link. Here's how to fix the Google Doc hack, for anyone already compromised.The Docs attack works by tricking you into authorising a fake app, called "Google Docs," an