All the more reason to end this stupid policy allowing people to get high-priced training on Uncle Sam's dime and then play the taxpayers for a sucker.
End the policy and make them serve out their commitment.
Go back to the old policy, where they would be charged with fraudulent enlistment, court-martialed, convicted, and sent to Leavenworth for 5-10 years. You didn't have anyone falsely claiming to be gay back then.
Homosexual conduct is not compatible with service in the American military, period. The experience of the United Kingdom is irrelevant. (BTW, it is likely to be false; the lack of public trouble could simply be the product of a strategically-placed D-Notice. Thank God for the First Amendment.)
The "don't ask, don't tell" policy is pretty stupid. The previous policy of "don't enlist" should be restored.