I just bought a hybrid bike with a quick release rear wheel. I guess it wasn't on tight enough cause when i picked it up to take it up the stairs, the rear wheel dropped off. It didn't completely fall off so i was able to push it back into place and tighten it. But now the brakes are clamped tight against the wheel so it won't spin at all. I need to fix this myself cause the bike shop is too far to walk with a non-spinning tire and i don't have a car. Any help?