Restoring to stock question

[ElAguila]

Well the keyboard has gotten to point to where it is basically useless even with the keyboard fix installed. I have insurance so I am going to take it to a repair center instead of spending $100 through asurion. Right now I have it unlocked with a custom rom on it. I was browsing and I found this post:
http://forum.ppcgeeks.com/showthread.php?t=21161

If I understand correctly, all I need to do is run the re-locker program and then flash it with a stock rom. Is this all I need to do to return it to stock?