Disaster! I need some help straight away please (if anyone is here!)

I've made a giant cupcake cake, using the Wilton pan. I used my own chocolate mudcake recipe (from scratch) and buttered and floured the pan before putting the batter in. After it was cooked and cooled, I left it in the fridge for a few hours (which I always do before leveling) and now it's stuck!!!

It's for my daughters birthday party tomorrow, how on earth do I get it out?!!!

HELP!! :panic:

I wonder if it would loosen up if you sat it in a pan of warm water for a few minutes?

If putting it in the fridge caused it to stick, maybe, like with baked flan, it will soften and release if warmed.

that's what I was thinking too.
I do this with my cheesecakes, I don't use spring form... just use a 3" cake pan then heat on stove burner a little and it popps right out.
You could try the burner or water.
Hope you get it out!!!