Sorry for replying almost 3,5 years later, but I've just noticed this warning in my Trust.
Unfortunately, somebody has hacked me back then. Despite using a password manager, my password was leaked. Luckily I acted quick and noticed that some scammer was trying to use my account to advertise his scam to other people. Bitcointalk should seriously consider implementing 2FA.
You'll have to send a message to the member that left you your trust if you want it removed. I would also delete the feedbacks your accounts wrote as it looks like they must have been written by the person who hacked your account. One other thing you can do is edit the text of your old posts to state that you didn't write the original post.