Well I removed the mirror. I removed the mirror strips and it was one big mirror behind.
There was a channel bar at the bottom of the mirror and two clips at the top. The mirror was not stuck to the wall beyond that though.
I taped up the mirror, removed the top clips and then used a hammer to help get the bottom channel bar off the wall (it was nailed in). Then I leaned the mirror onto a 4x8 sheet of plywood and brought the entire board down to the floor. The mirror was then flipped so it was glass side up and I used a glass cutter to cut it in half. No issues or problems at any point. I did use leather gloves and safety glasses the whole time though to be safe.
Here are pics from the removal...