I don't get what the vIqawba' is doing here. If it means
what it looks like it means, I obviously remember it, then
this is not a subordinate clause lacking a main clause.
If I remember the history of the STID dialogue, I think it's there to fill out the line while Uhura's mouth kept moving.
It's an unusual sentence either way. It seems like vIqawba' is referring to the subordinate clause as the object: "Because honor is important. I obviously remember it." ("it" being the fact that honor is important.)