Then just message that guy who pmed you to remove yourself in the campaign. In my opinion, if what you said with the post just above me, then there might be a user who registered you in that Bounty but the motive is the thing I'm not sure about.
I only see one reasons some one filled up the form using the username of the OP and bitcointalk link and add the ETH to link you to other account I think someone is mad at you
or some people using your account to link you from other members. Double check who own that address given in the spreadsheet.