You’re welcome,
For the future, when you’re building a base image, inventory into fog but tell fog not to join it to the domain. Then upload the image. This way you don’t have to disable the FOG Service.
Your method works, but if you have to restart for anything before the upload process, the Service will try to take over and could join the domain, lets just say you had to go to the bathroom while you waited for that restart.
Once the image is uploaded, then go ahead and enable join domain for that system should you need to.