Rio picked out the gold pieces from that cinder pile happy that these undead soldiers were easily dispatched. He took his time to inspect the hopefully now permanently dead soldiers for anything of interest causing him to lag behind. Following the group into the dungeon he went to Sampson and asked, "So do we know anything about what happened?". Given what happened to the soldier it would be prudent to know what happened if they managed to get any information from him before sending him away.  As they approached the door, Rio kicked it open.