I think it did - if we're talking about the youtube video.

What he's doing:

- Show the registration form and the error that you get when your serial is wrong

- Intercept that request, (replay it a couple times to - idk - show what that tool is/does?) change the serial to the ' OR "' value

- Refresh his Outlook.com account, showing a fresh "Thanks a lot, registration accepted, these are your credentials" mail