No help, but boy that is an odd one. I hope that Adobe Admin. can help you sort things out.
As for the previous posts, unless a MOD will search them all out (though only 18), they will be part of Internet history, until Adobe changes the fora.
Now, let me comment on your previous posts - if you offered useful info in any threads, why would you want those removed? If these were product fora, and you helped someone, would you not want others to benefit from those posts, a bit later on?
These fora offer several benefits: first, they usually directly assist users with their problems, and then they provide much useful material, if a person just Searches (am not defending the fora Search here, as I am not a fan), and reads. Many problems have already been solved. In several fora, we get posts to very old threads, saying "thank you," this thread solved all my issues. So glad that I found it."