That's an interesting fix

The best was I know of (especially for salt water), is to remove the battery as soon as possible, and drop the device into distilled water. Then strip it down and repeat. The water sensitive bits like speakers and mics do just a quick dunk. Submerge circuit boards for a few minutes. Leave everything to dry at room temperature for a few days (don't try to speed up drying by putting bits under a heat source or drying with a hair dryer). Reassemble.
Ja