Would it really be (serious question, as I dont know a whole lot about legal matters)? My limited understanding was that perjury is lying under oath, and sarcasm, while it does involve saying untrue statements, isnt considered lying in everyday speech because what it actually communicates is the opposite of the literal meaning of the words. Since laws deal with humans and not computers, my assumption would be that it probably works in such a way as to depend on what message a person is actually communicating rather than the precise syntax by which they communicate it?
from the sound of it, no, the article suggests that someone probably commanded them to fire back in the 70s while the thing still worked, and its just unclear when exactly this was and who did it.