Lakin refused to show up for the first leg of his deployment to Afghanistan - an order which was passed down through the chain of command and could only lawfully be initiated by Gates with the approval of the President.
Without valid Presidential authorization the orders failed requirement ii under lawfulness for Article 90. (See p 296 of the Manual for Courts-Martial at http://usmilitary.about.com/library/pdf/mcm2000.pdf )
You've ignored other orders he refused.
If President Obama signs the law extendsing the Bush tax cuts, are you going to insist on paying taxes at the higher level? After all, he has no authority to sign that law, according to you.