Thanks. I should have clarified in my example that the window/wall being demolished would include an addition which would be used as a closet. In other words, in this case, the closet would push out 2ft from the face of the window and portion of the wall needing demolition.
It appears that the split tool is the easiest way to demolish portions of walls. It is that I am splitting walls all over the place in order for new and existing portions of the model to work out right. I literally have wall segments that are 10" wide is some places. It is becoming both tedious and messy. I suppose that is a small price to pay when modeling.