Sounds like it's broken at the elbow. If that's the case, you should be able to pull out the broken end (probably will require some bending) and unscrew it from the nipple. That'll keep if from hitting your brake but your wheel is still going to have a wobble that will probably get worse if you ride it too much that way.
I'm guessing this is a non-drive side spoke. That's more common than I think that it should be. If that's the case, it failed due to too little tension. When that happens, in addition to replacing the spoke and retrueing the wheel, you need to increase the tension on the whole wheel to prevent a recurrence.