Hey, just goes to show...shit happens.
Actually, FWIW, I wear hearing aids (behind-the-ear style) and there's just no way around it, they get perspiration in them and cut out ALL THE TIME. My hearing aids have no special design features that allows them to survive getting moist...it's just something that happens. All I do is let the aids dry and they're as 100% good as new. These particular aids are probably 5 or 6 years old, so if the sweat was gonna have an effect, it certainly would have by now.
Now I wouldn't go so far as purposefully leave mics in the rain to get a recording, as someone on this list suggested 6 - 9 months ago, but as the guys at the time mentioned, even mics can survive a soaking.
Anyhow, I think your cables are 100% fine after drying.