I have a road bike. I was riding and was stopped at a light. the light turns green and I pedal then i hear a loud noise. I pull over and see that one of my rear wheel spokes came apart. My rear wheel was very difficult to move and felt as if my brakes were being applied but they weren't. I already took it to my LBS to get the spoke repaired and I have to pick it up this Saturday when i get paid. Is that one spoke the reason why the rear wheel can barely move? the wheel was all wobbly too. I don't know much about repairing bikes. thank you.