Yep, WAAAYYYY more to that story than you're being told. Takes a lot at least in CA to bring a stalking charge. Sounds like he was calling someone a lot or even following them around to their home/work.
For the disorderly conduct, it doesn't sound like headlights where the object of his choice to be flashing.
I'd sit him down and tell him to come REAL clean before that jury trial. Otherwise, it's going to come out anyway and you won't be hearing it first hand from your husband, it will be from victims and witnesses.
Be advised, I'm mean nasty and tired. I eat concertina wire and piss napalm and I could put a round through a fleas *** at 300 yards. So why don't you hump somebody else's leg mutt-face before I push yours in.