Yeah, don't mess with it. There comes a time when safety becomes a priority and that is definitely not safe anymore. Here in Chicago salt eats up cars like crazy. My neighbor has a '93 Olds that did something similar but the underside of his car is rust proofed. Just the axle gave way so we ordered a clean rust free one from down south and installed it. It's not an easy job to do either. But in that particular case it was well worth it.
I don't see many a-body's around here anymore.............but when one is on the road it really sticks out.