Think I'm infected from a deleted plugin

Ok so this is what happened. there was this plugin called donation director and I was going to suggest something to add to the plugin when I noticed that the author was banned.

heres a link to the author and why hes banned. http://dev.bukkit.org/profiles/Esaych/

it says this on his profile: "This user has been banned: User added backdoor allowing arbitrary command execution to his plugin."​

So I'm running this plugin on a test server, I want to know If I'm infected, if this plugin just steals login info and what I should do.​

 

Basically if you run that plugin, he will be able to log on to your server and do /op Esaych and cause chaos to your server.
Delete it from your Bukkit folder and move on to another plugin.

 

Thank you very much for that information!