One of my crosses is in the exact same situation since Spring when it tried to come out of dormancy. I un-potted it and found that the soil was too wet despite the use of a air pot and Fox Farm Ocean Forest. It is now in Pro Mix HP since a couple of weeks ago and in the same air pot with about 3 inch of peanut packaging at the bottom. We'll see how that goes. My guess was that it was a fungal infection due to too much humidity in the soil.
You might want to repot it to a much lighter soil.