I think your pump overheated and the heat caused the failure of the PVC pipe. Overheating can be caused by a blocked foot valve or the jet in the j-body the foot valve is on down in the well on the bottom of the two pipes. That would require pulling the pipes out of the well.
If the pump did overheat, the impeller is probably ruined and that is why you don't get any water. Does the motor run at all when the pressure is down to 20 or below? You do have a gauge right?