From experiance I have with sims over the years I'd have to say that no it won't.
Due to the way the slammer is guided (Datalink/Inertial) I wouldn't have thought STT would help any. Also if you consider an STT lock would alert your target to your presence, you'd be better just using TWS, IMHO.
I could be wrong as I'm no expert, but from what I've seen and read I think this is the case.
I anyone knows different please correct me.
Eddie