Marc,
I guess the first question is do the units operate even though they are broken free? If they do, I would find someone that can fabricate a replacement bracket to hold the units together. I find it hard to believe that simply having the bracket ripped free would destroy the units. I know our pair has shifted in the cabinet in the past, and I simply pushed them back into place. tired of doing that when we were home for a stretch I pulled the face frame wood off and added a bracket to hold the units in place.
You might call Fleetwood Customer Service 800 322-8216 and ask what they can suggest on the Dish Washer. I know some appliances carry a longer factory warranty than others.