User blog comment:Fadingsilverstar16/(Biiiiiiiig sigh)/@comment-1315493-20091108024724

The cannons are an ancient system of self-defense, used against the infamous morph hacker, who can morph into an account with thousands of edits, and powers, at his own will. The ban-hammer wasn't enough, so the username-less hero stopped him using the cannons, to destroy the IP without touching the account at all. (this would be a great plot for a total wikia movie, LOL)

There is a way to revive Emmy's IP. I don't know what it is, though...