I do not have experience with anyone saying that kind of thing. It would certainly frighten me. I do not think that is alcohol talking. I spent many years with an alcoholic and he never said or did anything that was threatening to me. Alcohol does not create thoughts but it lowers innabitions and increases irritablity and can lead to irrational behavior. What was the counselors response?
I would suggest going back to al-anon. Help yourself to really define your boundaries and what specifically you will do to uphold them. You are going to need that and, IME, it is easier said then done. Gather as much support as you can - and keep reading here.
I was going to end my post there but I feel it important to say that I really do think the combination of those thoughts and even a low level of alcohol (ie not full on drunk) seems like a very dangerous situation to me. I'd be worried about living with him myself.