It is unlikely your work was pulled from planetminecraft by Tim. The creator of Qubicle and he is I believe the only person with rights to do so on Qubicles behalf.
It is far more likely PlanetMinecraft removed your posts due to violating their rules. Either copying other peoples content and reuploading it, uploading content not considered minecraft related. Etc.
What ever rules that website has apply to you. They could have removed it for any number of reasons and you should contact THEIR support there to know why they removed it. Only they know this, if they even have an organised enough system to know why in the first place.
Finally, unless you legally agree to terms saying otherwise. Such as a legally binding contract, all work of your own creation is considered your own. If you create work that is completely unique, it is your own creative work and can not be stolen from you. This means that unless there was a EULA stating otherwise, all of the work you ever do in any software is your own. This means no one can take your work and claim it is their own, nor profit in any way from your work in a non-transformative manner.