The forms were taken off the footings today. They were filling the hole (swimming pool?) with stone when the dirt wall gave out and the excavator slid into the hole at us. Luckily it didn't completely tip over or hit/crush anyone because it was stopped by the footing. But as it climbed back out (pretty remarkable to watch!) the corner of the family room got broken off. So much for a solid foundation. Hopefully it can be repaired/replaced easily. I'll find out tomorrow.