What can be done when employer fails to correct issues?

A person is not cooperative with any of the others in a work environment. This person has seniority, but is not a supervisor. He mistreats his peers, but is an angel with his customers. He often hogs tools and resources that others need to do their job, but is very territorial over his work area.
In a recent situation, another worker completed a task in order to assist him. Instead of gratitude, he offered attitude. In a discussion about what the offense was, he was banging his fist into his palm while calling the other person angry and hateful, adn mentioned how that is inconsisten with a "religious" person. When it was pointed out to him that the other person was calm and he was the one red in the face and banging his fist, his response was, "Why are you attacking me?"! ????? Management promises to "take appropriate action", but my other co-workers say that this has been going on for years.
Any advice (other than find another job)?