Put a greased piece of sheet metal under the tire(s), and lower the axle with a bottle jack until the tire just touches the metal. When the weight of the tire/hub assembly is carried by the plate, the hub will slide off the spindle easily. Right now, the drum is probably hanging up on the brake shoes. I used to use that little trick to handle 18-wheeler dual tire/hub assemblies during bearing changes on road service calls. (At least 300 lbs.)
Jerry