I'm sorry to hear that you got banned, because you're great member of our community. But this ban shows that forum rules are equal for everyone. You're not random spammer who copied content in order just to farm signature campaigns. Maybe theymos will consider to unban you and give signature ban after seing your contribution.
But there is one thing that I don't like - it's digging very deep in old posts in order just to ban someone. And now matter that user did that mistake only once, then changed his bejaviour and become good member of community. It's looking for skeleton in the cupboard. Maybe these things are done using bot as said above, but it doesn't change my opinion.