No, I'm not being presumptuous. Mike has always encouraged long-term posters to run interference for him and help with making the rules clear.
What I did has been done countless times by myself and others. And I think it's appalling bad manners to respond to a troll after someone has identified them as a troll and given the directive to ignore them.
It's not hard to then go and read up and see that the poster IS a troll.