The source is the Boardhost records which shows the posts made in the name Bill Patterson and Ged using the same IP address.
I am sure you know that An Internet Protocol (IP) address is the unique identifying number assigned to every device connected to the internet. An IP address definition is a numeric label assigned to devices that use the internet to communicate.
It is possible that someone has hi-jacked your IP. But I don't know which of you is which. We will keep a close eye on posts appearing in the two names since at this stage the IP address has not been banned.