One of my heroes tried to pull that one on me last night, claiming that though you're not allowed to swap with shadow soul when you're in town, that that's because it's in a totally different location, whereas the stomach is still in the dungeon.
Seems a bit cheesy. So, my question has four parts:
1) Can someone swap positions with Shadow Soul when they're in someone's stomach?
2) If not, what is the reasoning and/or rule interpretation?
3) If so, since both that and the stomach acid damage happen at the beginning of the hero's turn, which happens first?
4) If Shadow Soul is in the stomach, does that mean that the wyrm can't swallow anything else?
Personally I think this is rather cheesy, but am willing to go along with reasoned arguments.