you sure it wasn't the rear leaf spring shackle that failed? they've been known for the 2 weld spots to break and cause the shackle to literally unravel and blow the leaf thru the bed.
here's a pic of the shackle unrolled due to the welds breaking...
and here's what happens when that shackle unrolls...
you can find a bodyshop or fab shop to repair the bed hole and as far as replacing shackles. it is HIGHLY recommended to purchase a set of PRGproducts.com Heavy Duty Shackles...
Prg Heavy Duty Shackle Install W/ Pics