I've seen it before..........
jmabe189, I saw this happen about a month ago on a W350 owned by one of the guys who works with me. I was looking at his truck so I could see how something was supposed to be on mine when I found it. On his, it looked like the bolts had came loose, and then 'flexed' back and forth till it broke out the front ears on his bracket, and then his frame, also. He drove it like that anyway, and about a week later, the box more or less fell off, with the rearmost bolt the only thing holding it on. Said it made for a pucker factor of about '10' before he could get it stopped.
To fix, he bought a new bracket from the dealer (in stock and @ $25. 00), and then had a mechanic from our shop weld his frame back together. Took about 4 hours.
This is a weak area on these Dodges, even with everything all tightened up the way it's supposed to be, you can see the frame and bracket 'flex' when you turn the wheels back-n-forth. It appears that most of it comes from the upper side of the frame. You need to check the rivets that hold the front radiator crossmember/spring perches/frame together as these are known to work loose also. There is only one rivet that holds the top of the crossmember in, and four on the lower side. The spring perches are held in with two of these and one more. If these are loose, you can torch 'em out (CAREFULLY) and replace with 7/16" (or drill to 1/2") bolts.
I personally am going to weld a 2 1/2"x 5/16" strap at a 45* angle from the bottom of the front crossmember to the top of the frame above the steering box to strenghten this area.
There are no TSB's for this that I could find. Check out
http://www.dodgeram.org for a complete list of TSB's. Hope this helps.