What a scary week for you both. Glad to hear he is ok and home with you. The snapping is from the nicotine withdrawal and the scare. Do not take it personally. This is the way men release fear and anger and we retaliate because we are hurt by it. When my husband had a blood clot in his leg two years ago, I almost lost him as tiny pieces had broken off into his lungs. When he came home, we were the same way. When he would snap, I just started telling him I Love You and he started snapping less. When I felt the urge to snap, I just stopped and thanked God that he was still here. Hang in there and be thankful for each minute together. God be with you both.