i currently don't have those installed, and the hinges stop it from going anywhere.....
just looked at it, you don't have access to it.. except maybe from a few inches above it from the inside of the truck, if you remove the entire dash, or from the bottom of the cab in a very small hole.....
if you decided that you still wnat to have it, looks like a pop rivit will be the best, or nut and bolt.....
it looks spot welded OE and thats probably what caused it to snap off over time