I cannot find any explanation anywhere about what is supposed to happen when the door of the Wyrm Turns is closed while a large monster sits on its base (covering at least 2 squares on each side of the door).
Some heroes smiled and said that my dragon would die. I said it would be split in two and each half would have 1/2 life, and roll a half RRB die for attack, and a 2 squares fire breath. Anyway, moving the dragon to make space had repercussions on the outcome (besides, the dragon might have not been able to expand), so I had to cordially revert a few actions and avoid the situation.
Has this situation occured to your playgroup?