Frankly, a broken stylus probably wouldn't generate a lot of hum. The hum would suggest some kind of a short or a grounding problem. Also, if the stylus were broken off, you really shouldn't be able to hear any music. (You could hear music if the stylus was merely bent, though.) While I certainly agree with Audiobugged that it would be wise to check the stylus carefully with a magnifier, I would also recommend jiggling all the wires you can reach and also flipping the MM/MC selector switch on the back of the Creek. My first guess would be a pinched tonearm wire shorting to chassis somewhere. My second guess would be some kind of damage within the cartridge. Good luck.