If a partner is throwing things and it's not in a playful, let's-have-a-pillow-fight way but in an argument you have every right to call the cops - they're there for your protection. "It was just a towel," the guy said, but check out this video, from the Palm Beach Post of a Florida basketball player getting a towel-related groin injury on the court.
I've been to Niceville. It's nice. If you go there, keep your towel to yourself.