Refurbing rear 9" drums on my '72 Demon

When we initially bled the brakes we did it just how the video showed except that we'd pump 3 times then hold. Initially there were some bubbles then no bubbles so we presumed we were good. That was done on just the rears. When car was in drive and brake applied left would stop, right kept on spinning. That was what prompted my initial post. Since that, we attempted to bleed the brakes again. This time, to start we did not attach the bottle but pumped and held and opened the bleeder. Nothing but a drip came out the rear on both sides. We went to the front and did the same operation and as soon as the valve cracked brake fluid came spurting out. Now when the car is put into drive and the brake is applied, it's the exact opposite, the left spins and the right doesn't. It makes no sense. Add on to that, when I tried to crack the right bleeder, it sheared off with no effort whatsoever. I bought a rubber brake hose anticipating it needing to be replaced, but it looks to be in real good shape. I will replace it just to be safe and re-bleed and let you know what happens.