They don't have to say a word, just sit next to you and listen. It's not about being physically threatening, just letting the attorney feel that others are seeing his inactivity. Don't let him chase them out of the room. Tell the attorney they are there for moral support, to help you remember what is said, they are family, they are your ride home, whatever. See if he acts a little different when there are three pairs of eyes staring at him while he dismisses your fears.
I don’t think that is a good idea for two reasons: 1) Taking others in the meeting could likely be construed as waiving the attorney-client privilege and 2) you are still wasting money on that bozo. Get a new attorney.
they can’t come in, or the attorney client relationship is nonexistend.