Drying After Water Damage?

Hi, I have the WH-ULT900N, and about 4 days ago, they got wet when a water bottle opened in my bag. At first, the left side seemed dead, but the right side was able to produce some noise. Soon after, the headphones seemingly died altogether. I left them to dry for he past few days and thought I would give it a shot powering back on again.

When I put them on today, the headphones gave the audio message that the battery was dead and but all the buttons worked and the audio sounded clear.

From here, is it worth it to open them up in order to let them dry better? I'm afraid to plug them back in.