You've officially done it. You've become the village idiot of Imgflip, dethroning DJFox, congratulations!
I'll say it slowly so that you can understand:
You. Can. Not. Wish. Away. A. Sitemod. Through. Petition. All. Because. You. Don't. Agree. With. The. Rules.
Don't want to get banned? Dont break thy holy TOS. Simplez!
You can still ban him. It won't stop him from moderating but you can stop him from posting or commenting if you like.
It's a built-in Imgflip feature and site rules dictate that stream owners can banish anybody they like for any reason.