I don't see anything wrong with it. Of course you shouldn't bathe them excessively but whenever I clean the tank mine gets a soak. Sometimes he likes it and just stays there and takes a drink and other times he wont have it and will start exploring. So I just wipe him off and let him slither around while I clean. Also I get what people say when they slither around in their feces. But even despite that it is only when I clean the tank.
As long as it isn't excessive I don't think it is that serious of an issue.