Could you return the X-Box?

One of the best pieces of advice I ever got from my therapist was to "use your anger."

But like, not use it to kill the people who are making you angry. Rather, use the anger to put wrong situations right.

I'm sorry your husband isn't backing you up on the family's financial security.

You could use your anger to do the following:
1) Create a separate bank account to protect the family's emergency fund
2) Cancel spouse's credit card
3) Tell spouse that he accepts new rules or he can leave. (Sounds harsh but he might be grateful for the discipline.)
4) Talk to spouse's therapist to get backup in this

Anyway, my solutions won't be YOUR solutions. But seriously, use your anger to get the results you want. Presumably, you want a harmonious family life.

"The Dance of Anger," by Harriett Lerner, is a good book on this.