I do not believe he is concerned about his pension. As difficult as this may be to understand, the man is acting, if his words are to be believed, out of a commitment to do what is morally correct, and in the process placing his personal interests at risk. A reversal would not satisfy his concerns.
He will be if the book deal doesn’t come through.
I had a good friend in college whose older brother vowed to trim neither his beard, nor the hair on his head, until Apartheid ended in South Africa. He kept that vow for several years. I don't doubt that he felt what he was doing was morally correct. And believe me, walking around looking like Rip Van Winkle, he darn sure put his personal interests at risk. But eventually he "figgered out" that not only was he not ending Apartheid, by walking around with hair that looked like and explosion in a string factory, and a beard that would appall ZZ Top, but by associating the attempt to do so with himself, and his appearance, he was making his cause look ridiculous.
I don't doubt LTC Lakin's good faith, or willingness to suffer for his beliefs, I just know that he isn't going to advance the stated goals of Birtherism, by getting court martialed. My friend's brother eventually visited a barbershop, and came out looking no shaggier than a lot of guys on a college campus. LTC Lakin is going to have a lot harder time getting his pension back.