Kathleen, you should be able to speak to the therapist provided by hospice. It does not have to be in front of your husband. They should be able to help you figure out how to cope with his rage, or at least give you a trained ear to vent to.
Hon, don't worry about not having the energy to deal with all those other people. That's not your responsibility. Focus on self care and supporting your husband. They should be supporting you! They can support you or go kick rocks.
Sorry if I sound harsh. This hits close to home for me. When Mom was in hospice care I would sit in the parking lot and bawl my head off after visiting. It was so damned hard dealing with everything by myself. I would lament having to do everything myself and wish for someone to help. Then I would think of friends who'd been in a situation like yours.