Well, I was able to remove the broken backer plate and thankfully my local dealer got one in overnight. The axle came right out so the setback was actually pretty minor. Plus it gave me a chance to change the diff fluid, which turned out to be 2 pts low. Today, everything is back together and the running fine
. The brakes do take a lot more force (leg effort) than I'm used to, but the truck stops straight and the antilocks work good. I'm a little gun-shy to start another repair, but I'm thinking it might be the master cylinder or power brake booster. Not sure? Maybe I'll just wait on any more repairs though until I absolutley have to do it. Too stressful when things break, and things always break.