The rules section clearly explains that players are not to have creative items unless part of a town with the member who created them. These rules are linked right at spawn.
The decision to delete your base was not come to lightly, over an hour of deliberation went into it. However, ultimately, the quantity and type of creative items you possessed far exceeded "a few". You also had items of which you did not have the machines required to craft.
It was obvious that these items played a large part in your progression, as such, everything was removed.
Fortunately, our player base is one of the most helpful I've ever seen, I'm sure people will happily help you start over.
Rollbacks are not my responsibility, so my answer is not final. I am however recommending denial of your request.