goodstick, Is this were yours was hitting the leaf spring? I know there are differences in frames, but they should be similar to this. That is the only area I can see where the sway bar could make contact with the leaf spring. Please note, that I have longer links and this is the same angle as stock. There are a couple of inches on each side so something must have gone wrong with yours.
Yours obviously had a problem and I would like to know what happened. Here is how I look at it. The end links is what keeps the sway bar centered, not the sway bar bushings/brackets. If you remove the end links you can move the sway bar up/down, and with some force left/right. Now, let's say this is true, then if your end link bushings gave out then the sway bar could have moved.
I've only put ~4k miles on ours so only time will tell. When the bushings give out I'm going to go with poly all around.
BTW, a picture would be nice to see what yours looks like.