Generally, a tenancy by the entireties cannot be affected or compromised by anything that only one spouse does; and it ends only when both spouses sign a deed, or upon divorce or death. But when one spouse signs a deed transferring his whole interest to the other spouse, that will generally do the job, even without the other spouse's signature, the Virginia Supreme Court says in Evans v. Evans (6/4/2015). The only exception would be if the recipient does not do anything to accept the transfer, and the transfer would be against the recipient's interest -- for example, if the transfer makes the property vulnerable to the recipient's individual creditors, the Court says.
In this case, the Court says, the signing of the deed shows the husband's intent; and the wife showed her acceptance of the transfer by signing a will, a deed and a trust which treated the property as her sole property and conveyed it. The trial court's declaratory judgment that the property did not belong to the wife's trust is reversed, and the Supreme Court issues a final judgment declaring that it is the trust's property.
Such one-party deeds to a couple's tenancy by the entireties real estate have been extremely common, especially since multi-state banks were legalized, and banks based out-of-state started demanding "quitclaim" deeds, which in Virginia are the weakest, most unreliable kind of deed. It is fortunate that the Supreme Court did not invalidate the chain of title to virtually every property that was ever transferred in a divorce.
However, because the Court noted the exceptional circumstances where the deed might be disregarded, that means that we should always have deeds in divorce cases signed by both parties. The Court's ruling is completely reasonable, but it would probably be better to be more simple and absolute, and not so reasonable. Without an absolute rule that such deeds are always valid, no title insurance company will want to see any more new deeds that are "almost certainly valid but maybe not in certain situations." The whole system of deeds and land records is designed to make public records that make the ownership of every piece of real estate absolutely clear and reliable. And most law on deeds is designed not only to do justice between the two parties, but to give everyone else certainty about who owns what. So let's pause to appreciate this finely nuanced ruling, and then proceed to never again do what it allows.