Your one of the very few lucky ones.

The majority of people changing the plugs, dealerships, and myself included break at least one plug off no matter what method used.

I backed mine out an 1/8th turn, sprayed with Kroil and let sit for 24 hours. Then cranked another 1/4 turn and let sit for yet another day being super cautious. And I still broke 3 and had to use the extractor tool. Even for the Ford Technical Service Bulletin, I was being very conservative. Now, that being said, I'm never putting those garbage OE plugs back into my truck. I love my truck to death and I never knock on Ford, but wow they really messed up with that design, and only making themselves look worse by not upgrading their Motorcraft spark plug into a one piece design.

Just my opinions of course. Can you tell I had a lot of "fun" having my truck sit almost 3 days soaking plugs and still needing to extract 3? I got a little jaded after that project.