Actually, the parking brake shoes may be holding on to the rotor (if the parking brake is set or has been recently adjusted incorrectly). Other than that, nothing is holding the rotor in place. The parking brake on this car is a drum brake design, it all fits inside the rotor, so yes, it uses a set of different shoes. If the hand brake is not set and the allen bolt is almost out (keeping it bolted in a little bit prevents the rotor from dropping on the ground when it gets loose) and the rotor is not budging, take a hammer and start smacking the hub/hat part of the rotor towards the center of the car (meaning, towards the opposite wheel, not towards the front). The impact of the hammer will help loosen the rotor and then you can remove it easily.
Hope that helps a bit.