As promised I took some pictures of the area we will be putting drywall and the area that cause of the whole mess.
Here are out steps. They are incredibly narrow at 28 inches so we are going to pull the plaster off instead of just putting drywall over it to save that inch.
This picture is of a drop in the ceiling that will prevent us from taking a queen size bed up the stairs. I'm going to take the opportunity and move it back so we will have more clearance for large furniture. Currently there is a 46" max width.
Where the wobbly banister used to be. There was almost nothing to anchor it to, hence why it was all wobbly. Once again, my poodle always enjoys watching me work.
And finally all the plaster that fell off the wall while I was pulling the banister out.
Also in the plans are a new sub floor for the whole upstairs since the original one is 3/4 pine planks and are rather warped and bowed. We will be pulling plaster off as soon as I finish clearing out the upstairs and get the new sub floor in. I figure it will be easier clean up with an even floor that doesn't have lots of cracks and grooves in it.