Accidentally marking blog comments as spam

Anyone know how to revert this? Thomas Thurman sent me a comment and I accidentally pressed the “mark-as-spam” link in the email I received and I can not find a way to revert that. It also seems he can’t post his entry again :/

The comment was about my image and how it would be a good GDM greeter screen. I agree and had this in mind at the time of taking the picture. So I uploaded it and it is pending on