I had to remove my fridge also for a broken water valve. We have an A40.
Along with the top brackets we had to remove the bottom panel also. You need to remove the 4 screw hole plugs to be able to get to the screws to remove the panel. We then had to pick up the fridge to get it over the bottom piece of wood. We put a patch of carpeting on the tile floor to prevent scratches and it helped slide the Fridge out of the way.
2017 Thor Venetian A40
2013 Acadia Denali