It was the same with us. Nothing tore but dried well. We were very busy in this phase drying windows and wiping water drops from the ceilings. Ventilate, ventilate, ventilate. Tip: Buy yourself a window vacuum. It helps tremendously and is great for cleaning windows later.
Drywall boards will all be replaced at the architect's expense. We were at the house with an expert. Another question: could the battens possibly also be affected by mold, or does it take longer for wood to develop mold?