I am very direct when there's a problem I have with someone. I believe in being direct and upfront, because if one tip toes their way around an issue, it never gets fully addressed OR resolved.

The problem is not his behavior. It's hers. Perhaps she does have issues with him, but she does not voice it, or at least it hasn't been openly discussed on here what those issues are.

If it were me, I would be telling her that her behavior is unacceptable, that it needs to be addressed, and that she needs professional help. I would insist upon it, or I would insist upon separating if the behavior is to continue. This marriage cannot keep going on the way it is. It is toxic, and it's coming from her behaviors. Normal people do not hit objects in anger and rant on for days on end out of anger. She has issues that need professional addressing.

So I believe in confronting an issue head on, with 100% honesty even if it's brutal honesty.