"You are permanently banned from talking in <insert name>." - Bug

[TheDerpySupport]

@Streusel

So I managed to ban myself thanks to a users suggestion on /r/twitch credit to Pomodorosan for doing it first (https://www.reddit.com/r/Twitch/comments/4ucg7n/i_banned_myself_from_my_chat_to_see_if_it_would/).
Here is a step by step on how to do it.

1. Make a comment & toggle the comment cogwheel.
   http://i.imgur.com/MrWnXJB.png
2. Ban the user
   http://i.imgur.com/acIjsih.png
3. Try talking.
   http://i.imgur.com/FiTZMBC.png

Unbanning oneself doesn’t work with /unban, I thankfully had moobot in my channel and already had given it permissions as such using the “permit” (http://i.imgur.com/P60eVmL.png) I was able to unban myself.

Edit:
Only been 5 minutes since I posted this but it seems a staff member is already aware of it. Reddit - Dive into anything

Just a heads up but you could have easily gone to your channel settings and unbanned yourself there.