Even Michele states in her book, not for cases of abuse. Please be aware. Physical abuse gets worse, not better. Your H may need help for his drugs, which no doubt play into his behavior. I know you love him, but love also means doing the best for someone even if its hard. You should seek help and protection. Is there someone that can be with you, a friend..family member? Do others know about the pot? Maybe its time for rehab?
Most people do not think of pot as addictive, but it can be for some. It also may not be all he is doing. Do you know for sure?