2006 Dodge Dakota TBS or Warranty

Brakes problem
2006 Dodge Dakota Four Wheel Drive Automatic 27,129 miles

I have my son's truck in the dealership due to a strong shaking of the front end when the brakes are applied. I had my mechanic look at the car the day before and he replaced brakes and routers in the front and said the back brakes shoes have another 50 % of wear to them. Dodge is telling me the shaking is due to needing new back brake shoes. I researched on-line and there is a recall that describes the problem the truck is having to a T but my VIN was not included in the recall. Has anybody heard about this? There is a technical service bulletin regarding this issue. Also, my truck is still under warranty.

Any help would be appreciated. Thanks!