I would think that a person has certain boundaries and if their partner has a temper/anger problem, that the boundaries have to be enforced. Being angry doesn't give anyone the right to take it out on those near them, right? If the boundaries aren't respected, then it's probably wise to let the angry person know, in a calm fashion, that you'll talk to them later when they're not angry, and then perhaps even leave the room.
Being supportive and loving and agreeable to our WASs does not mean one has to become a door mat and take abuse. That's not what love is.
Thinking in terms of something being fair or not, I'm reminded that nowhere is it written that things must be fair.
Is he like this because he dont want to be around us and he feels tied down or is he just a grumpy person.
Who knows? It may even be something else, or an accumulation of things. Doesn't matter much, that's not the issue. The issue is his choice in handling his feelings and associated behavior. Try not to take his behavior personally. It's his behavior, not yours, that's questionable and totally his responsibility. It's amazing... here we learn to grow and be mature in our thinking and behavior partly for the sake of attracting our WASs back, becoming far better people in the process... while they continue not to grow and act immaturely. Why do we do this? How does the song go? "It must be love, it must be love..."
