[Under the Radar]

Gov. Bar R. VII, Sec. 2(A) defines the unauthorized practice of law as the "rendering of legal services for another by any person not admitted to practice in Ohio...

You will have lots of fun trying to prove that a husband "rendered legal services" to his wife by giving her legal advice, bad though it may be. You might succeed, but it would be difficult.

[Catspaw]

You will have lots of fun trying to prove that a husband "rendered legal services" to his wife by giving her legal advice, bad though it may be.

Not that part--but holding himself out as a lawyer to law enforcement would be very close to that definition. Representing her in court would get him a UPL charge, at least in Wisconsin.