Yes, if you get injured or overwork, the fiber proteins in the fascia can break. They can heal again but maybe it will be scars. 
If it has been tight and stiff you can release it.
Yes, there are a lot of manipulation treatments which release the fascia, collagen fibers and increase the flow and gliding between layers. Fascia is very sensitive and receptive for haptic perception and soft vibrations and such treatment can recreate the flow and homeostasis to the tissue.