The shocks themselves seem to work fine (no collapsed cylinders), but the rubber bushings are completely crumbling. Time for new shocks anyways.
Uh, I pulled the coil-over springs off the old shocks and the shocks collapsed completely. no charge left inside at all. good thing I replaced them!
shocks went into the scrap steel bucket and the coil springs went into the "too neat to throw away so we'll just keep them for a couple of decades first" bucket.