What a terrible worry for you Casbow.
I don`t know who to feel more sorry for, your husband or the person he has injured.
When my husband became overly aggressive I asked for him to be medicated saying I preferred over sedation for him then fear about his aggression. This was when he was at home with me and I had a safe room in the house.
I was warned the medication would affect his mobility, which it did and he ended up in residential care. I had to decided in consultation with the doctors what was the lesser of two evils.
I feared he was living in torment and sedation was the only way to give him peace.
Fortunately , relatively speaking, this all lasted a short time and the last four years of his life were peaceful and contented even though his mobility had gone.
I hope something can be found to help your husband Casbow. You don`t want people to be frightened of him and if possible you would prefer him to stay where he is. Perhaps you could ask about medication.