You might try a big puller. put a plate over the end of the stub axle. Either tie to the lug nuts or the axle shaft bolts. Although if it is really coming off hard I'd stick with the lug nuts. If the shoes are it to the drum and the the brakes are not retacting could be your problem. The way the shoes are mounted I don't think removeing the bolts from the wheel cylinders it going to gain you anything.
My 2cents
Don G.