On many cars you can remove the wheel and the disc retaining bolt, apply the parking brake to hold the disc, start the car, put it in gear and use the engine power to break the hub loose from the disc.
Needless to say, the car should be very securely supported on level ground with the front wheels chocked. Don't do this if you're using flimsy jack stands since the vibration could cause them to fail. In other words, use common sense and be careful...
Make sure to remove any rust or debris from the hub face before installing a new disc. If the hub face is uneven it can lead to brake pedal and/or wheel vibration.
I put a thin coating of anti-seize on the hubs before installing new discs so as to avoid this problem in the future. Be careful not to use too much or the excess could contaminate the parking brake shoes.
'93 190 2.6 Sportline