He should try to get in touch with her and convince her of the necessity to finalize their separation and divorce. Without doing so, they remain legally married, and all assets acquired by either of them during the course of this marriage are considered marital property. The other spouse retains an interest in all such assets.
If he is located in the New York City metropolitan area, have him call me at 212-370-1660 to discuss the matter at greater length.
He must get a legal separation and divorce ASAP.
Leonard M. Weiner, Esq./Divorce Solutions