Hard Idle: I mean, not to offend you, but where do you come up with this stuff? It is NEVER a mistake to call the cops unless you yourself are involved with something illegal. Your advice about taking a crowbar to the front of his car, well, that will just land Karma in her own pot of trouble because he will KNOW who did it and more than likely burn or dispose of her personal items that he already has in his possession.
As for the 4 hour wait Karma, I warned you. And once again, HI makes no sense at all. It isn't so much about "Your chances of getting action have little to do with law and mostly depend on the personal ethics and whims of the detective you deal with." First of all they don't send a detective, they send a constable or a sheriff. Secondly they will send officers out on a priority basis. Would you rather them send someone to a shooting or say, Oh, umm NO, can't send someone for that, we have to get Karma's clothes back..."
If you can, block his vehicle in with yours so he can't leave. He has to deal with this at some point and if it means missing a day of work, then he should have let you get your stuff to begin with. Like I said, call the cops early. Go over at 5 am and call when you're on your way.