How difficult would it have been for him to change the pin?
The problem 'mss080' has is proving she took something that she wasn't authorized to do. Even though her name wasn't on the account---he cries theft---she says, "He gave me the card and he even gave me the pin number."
He might have a good chance of getting the money back if they were legally separated, but even then she can state he gave her permission. It would be a bad case of, "He said", "She said".
Indiana Code
31-15-7-4. Division of property
(a) In an action for dissolution of marriage under IC 31-15-2-2, the court shall divide the property of the parties, whether:
(1) owned by either spouse before the marriage;
(2) acquired by either spouse in his or her own right:
(A) after the marriage; and
(B) before final separation of the parties; or
(3) acquired by their joint efforts.
(b) omitted
31-15-7-5. Presumption of just and reasonable division of property
The court shall presume that an equal division of the marital property between the parties is just and reasonable. However, this presumption may be rebutted by a party who presents relevant evidence, including evidence concerning the following factors, that an equal division would not be just and
reasonable:
(1) The contribution of each spouse to the acquisition of the property, regardless of whether the contribution was income producing.
(2) The extent to which the property was acquired by each spouse:
(A) before the marriage; or
(B) through inheritance or gift.
(3) The economic circumstances of each spouse at the time the disposition of the property is to become effective, including the desirability of awarding the family residence or the right to dwell in the family residence for such periods as the court considers just to the spouse having custody of any children.
(4) The conduct of the parties during the marriage as related to the disposition or dissipation of their property.
(5) The earnings or earning ability of the parties as related to:
(A) a final division of property; and
(B) a final determination of the property rights of the parties.
Good information link:
http://www.divorceinfo.com/infaqspropertydivision.htm