It's possible to be disabled as spammer just by being the author of AntiSpam.DisabledUsers

If any spam user id matches some spam keyword, whoever is the author of the page AntiSpam.DisabledUsers (generally the user who installed this extension) is going to be disabled as soon as the spam user is added to that page.

The whole AntiSpam space should be ignored when analyzing modifications. Also the author of that page should be explicitly set to something that make more sense than whoever was the previous author.