re: PPSA: Everyone doing their own plan

I'm having a sharp pain when I bend at the waste. It's just in between my back dimple and spine, looking at a diagram maybe in the thoracolumbar fascia. It doesn't really hurt when I twist at the waste, but i feel the sharp pain when I do a full squat or bend at the waste. I can definitely feel a hard spot there less than 1/4" wide compared to the other side. Any thoughts? Do I need to avoid any specific exercises? It's more annoying than anything, doesn't prevent me from working out currently and I have my full range of motion.