adamico88,
No, I have never heard of ALS or any other motor neuron disease manifesting itself as a systemic spread of joint problems, be it joint cracking or other joint problems. ALS is a disease of the voluntary nervous system which paralyzes voluntary muscles. Any effect that ALS has on joints is caused by those same paralyzed muscles and manifests itself as reduction in the range of motion in the joint (paralyzed muscles cannot move to operate the joint properly).
Please address any further questions that you have about your condition to the Do I Have ALS? section of the board.