It is. It's a very broad offence provision--“Conduct to the Prejudice of Good Order and Discipline”--and it includes breach of orders, breach of instructions, whether they be verbal or written, and there's a proving element to 129 that can be fairly complex from a prosecution perspective. But 129 is really intended to capture all of those things, that hodgepodge of military disciplinary types of things, where essentially the offender is not following instruction or direction of a general nature. That's where you would end up.
So would malingering never be charged? I certainly can't sit here and say that, but I certainly have no experience that would suggest it would be in those very minor circumstances.