ART. 125. SODOMY
(a) Any person subject to this chapter who engages in unnatural carnal copulation with another person of the same or opposite sex or with an animal is guilty of sodomy. Penetration , however slight, is sufficient to complete the offense.
(b) Any person found guilty of sodomy shall be punished as a court-martial may direct.
Would repeal of DADT nullify this punitive article? There seems to be difference between stating one's sexual preference and being observed demonstrating that difference.
The short answer is no. However, if DADT is repealed, the lifespan of Art. 125 is probably not very long. If the appellate courts affirm the recent prohibition against DADT, then I'd say Art. 125 would be struck within a few months.
You might be surprised that very few (virtually none) separations under DADT include this particular specification. Almost always, it's used against someone who is engaged in heterosexual relations, albeit not always consensual relations.