I'm separated from my wife but not legally yet. Can I stop her access to my soc sec disability payments now without causing myself legal problems?

That all depends on exactly how she is accessing those payments. And, if you are separated, you probably should be moving forward for a divorce or legal separation. Doing so could help you on your issue. These are factual issues that we can discuss. If you are interested in pursuing the matter further, I off an initial 1/2 hour consultation without charge. If you want to set an appointment for the initial consultation, feel free to telephone, or email, my office.
 David R. Hartwig
801-486-1715
drhlaw@ix.netcom.com