This video shows the impact of hydraulic forces on a basement wall. What are hydraulic forces...Water and frost pressures.
During this home inspection, after noting the excessive cracking in the bathroom, I found that the wall had shifted in ¾- 1 inch below the top course of block. Over time, water pressure, frost, and potentially expansive soils lead to this wall moving inward.
The good thing is, there are companies in the Rochester MN area that can install an anchor system that will pull the wall back into the correct position, and stabilize it from future movement.