Whatever you do, dont phone him again, as he will tell his insurers you are harrasing him! Do you have legal cover? If so they will sort it all out and Im sure youll be fine. Couple of years ago I hit a dog which was loose off its lead on a main road, the owners lived nearby and blamed me saying I was going too fast. The dog survived and my insurers considered me blameless and claimed on the owners house insurance! They did say not to contact the owners, even to ask how the dog was doing as this can throw the case back at you apparently.