This is no doubt a leadership challenge. Unfortunately, the issue becomes more complicated when the spouse is unwilling to cooperate.
Suspension of privileges over spouse safety concerns
The commander can revoke all kinds of privileges: pass, off post living, phone, personal property, alcohol, MWR, the list goes on. The key is to relate the revocation of privilege to the issue at hand. If there is danger in the home perhaps separating them for a period while they attend counseling would work. He could revoke pass, off post, phone, he could even issue a no-contact order other than at the time at counseling. If alcohol has been involved in the past he could revoke this privilege as well.