When it comes to plagiarism, everyone can hope to get a second chance, and many got it because they had the support of other members and were punished with a signature ban for a certain period. As far as I could understand from the posts in this and other threads, @stompix pointed out that in your case it is not exclusively about plagiarism, but about ban evasion.

You probably already are, but take another look at this thread - it seems to me that this is very seriously documented and that there is no doubt that you are part of a large alt farm - one banned account means the same fate for all the others.