That is not always true. In Illinois if property is acquired during the marriage and then someone is deeded off during the marriage it can hold up in court assuming it wasn't a temporary situation.
But,on another note if they were holding the property with right of survivorship he would have no reason to deed her off if he was going to murder her.Only if he were going to divorce her would this make any sense at all.
PROPERTY DISTRIBUTION:
Illinois is an equitable distribution state, meaning that marital property shall be divided equitably, not necessarily equally.
For purposes of distribution of property, all property acquired by either spouse after the marriage and before a judgment of dissolution of marriage is presumed to be marital property, regardless of whether title is held individually or by the spouses in some form of co-ownership such as joint tenancy, tenancy in common, tenancy by the entirety, or community property. Marital property shall be divided, without regard to marital misconduct, considering all relevant factors, including:
The contribution of each party to the acquisition, preservation, or increase or decrease in value of the marital or non-marital property, including the contribution of a spouse as a homemaker or to the family unit.
The dissipation by each party of the marital or non-marital property.
The value of the property assigned to each spouse.
The duration of the marriage.
The relevant economic circumstances of each spouse when the division of property is to become effective, including the desirability of awarding the family home, or the right to live therein for reasonable periods, to the spouse having custody of the children.
Any obligations and rights arising from a prior marriage of either party.
Any post-nuptial agreement of the parties.
The age, health, station, occupation, amount and sources of income, vocational skills, employability, estate, liabilities, and needs of each of the parties.
The custodial provisions for any children.
Whether the apportionment is in lieu of or in addition to maintenance.
The reasonable opportunity of each spouse for future acquisition of capital assets and income.
The tax consequences of the property division upon the respective economic circumstances of the parties.
Non-marital property is considered:
Property acquired by gift, legacy or descent.
Property acquired in exchange for property acquired before the marriage or in exchange for property acquired by gift, legacy or descent.
Property acquired by a spouse after a judgment of legal separation.
Property excluded by valid agreement of the parties.
Any judgment or property obtained by judgment awarded to a spouse from the other spouse.
Property acquired before the marriage.
you might be right - see red above
http://divorcesupport.about.com/od/usstatedivorcelaws/a/illinois_laws.htm