First of all if you fire the JAW at a target that is CLOSE to you, it will not explode.
Like on a crash site game when I'm up on a roof and I see a squad of juicy targets running around the pod, I whip that bad boy out to take out a few of them and I fire and nothing happens. It's like the rocket fires and then shoots off into space and disappears.
Before claiming that you understand the thread(BTW, YOU DONT), you should do some reading FIRST.
First of all if you reply a thread that you DIDNT read, it will not work.
ONTOPIC: I like the JAW very much, have it on level 3, on all classes, capped it pretty soon after unlock. Misfires once and then, I believe it has something to do with distance. But they work on Ceph ships, hmm... they do go poof once in a while though. I guess it has a range variable? Haven't really looked into it.