Unable to rewind film in camera

Well, I used to work at a camera store and actually encountered this a number of times with Minolta's. I can't remember if the motors wore out or if the film slipped or tore at the track. The solution: take the camera into a darkroom or pitch black environment and remove the film by hand. Bring a pair of scissors and a black film container just in case the film tears or the track is torn. Obviously be careful to ensure no light is available if you can't access a darkroom. Check the bottom of the camera for a small button that disengages the motor gear (some newer models may not have this)(you may have to hold it in). Open the film door and with clean hands, use your index fingers and thumbs carefully on the tracks only and pull evenly. You may feel some resistance from the motor and hear the motor but if it won't budge check again if the bottom of the camera has a film release. As you do this feel for torn areas in the track which may indicate a motor malfunction or improperly loaded film. Now just wind the film back into the canister unless the track is torn. You may want to leave the leader out, and you should probably have the film developed right away for a list of reasons. If the track is torn, cut it off at the canister and touching only the edges roll it up and put it inside the plastic film container. Mark it "open film", or Open only in darkroom etc. and mention it to your developer. Alternately you can just hand over your camera to your developer who will do all of this for you...