As far as I know, I have not been added to the spreadsheet ( luckily, the 1xbit thread OP is sloppy or smth ) nor got payed for any posts.
You can check it by your own, but for sure I am not going to look for any shady signature campaining.
I have no time to check their spreadsheet because i dislike 1xbit, and this should be lesson to you and also to any other person who is curious to join signature campaign without investigating about the campaign first if they have bad reputation. But if your username is not in spreadsheet i think your tag is supposed to remove.
I think now you just need to contact _BlackStar to reconsider that negative tag. He's been inactive in the last few days, so remind him with one of your PM's as it might get him responding to you again in this thread
you are right, in addition, i think he should wait until he comes online and definitely he/she will receive notification through quotes and respond to people. And secondly pm is the easiest form to reach him very fast to address the issue of removing the tag.