There's really nothing in front of it that's blocking it from being removed. Looking at the picture now, I'm pretty sure I can remove the upper cabinet beside this one and pull it out. Of course that is IF I can find the rest of the screws, and I'm sure I'll end up removing the bed as well. I was just curious to see if anyone else knew how to get it out before I pulled too hard and broke something. Dan, I've tried various methods of pulling it from the outside, but to no avail. If you saw the dent, you'd understand.
Really the panel needs replacement, but I'm trying to make the best of it to use the trailer now and work on it in the off-season.