Hi Adam,
before junking the motor, take the armature (the part that rotates) to a motor specialist and have them check the coils for short circuits, at the same time have the commutator surface (the copper segments at the end of the armature) checked. If there are shorts it's a case for a replacement motor, unless someone is prepared to rewind it for a reasonable price. If the surface of the commutator is badly scratched have it cleaned.
There as a couple of points that have not been covered. Firstly, why did the motor end up in this condition? The motor has a thermal cutout fitted to the case, plus a thermistor, to measure the temperature, that is located within the armature. These are there to protect the motor from overheating.
It seems to me that these two items have been bypassed.
Assuming all is OK, it is imperative to have the thermal cutout mounted on the motor casing. You can do away with the thermistor, but it is advisable to have it fitted. The thermistor activates a warning signal on the Pod unit, indicating that the motor is starting to overheat.
Hope this is of some use to you.