Francesca,
I don't know that I "belong" to this forum yet, but I saw your post. My first husband was police officer, injured severely at work. He too to rid of the pain meds very quickly - everyone was surprised. He got very moody & argued with me all of the time. Anger & moodiness can be signs of depression, which is common after such life-changing events. Please, talk to his doctor, talk to him and see if he will go to a counselor or even take depression meds if they feel it's appropriate. Whatever the reason for his anger right now, he needs to find a better way to work through it. I feel very strongly about such things. My husband refused help after help. He committed suicide 2 years after his injury. He couldn't handle the changes that had occurred & he would not let anyone help. I don't say these things because I think your husband is headed down that road, but I would encourage you to talk to him and to his doctor; and possibly to talk to your own counselor. I imagine you need somewhere to vent also and you husband is obviously (and rightfully so) having a difficult time. Your in my prayers.