Lazy (Dragon Age: Origins)

Played here in Dragon Age. Came to the forest the dalish, took the quests and went into the woods. In the forest found close to the speaking oak(which asks to find an acorn) a tent and a bonfire. Well, I certainly have killed that spirit, but after this incident, my companions are constantly lying on the ground. Can I talk to them, they engage in dialogues with other NPCs, but after that they are stupid stone on the ground. They don't go after me, not fighting, not helping. How to Wake up?