Papaver,
that looks like very yummy bread!

From the photo, it looks like maybe the dough was a bit more moist than necessary, thus it formed itself around the folds in the paper after being placed in the hot pot.
Did you preheat the pot in the 450-500F oven for at least 20 min before placing the bread in? That's important to get a quick puff up and seal the crust right away so the dough can't creep around once it's in the hot pot and covered.
The other thing is that you only really need one layer of parchment.

How did it taste?