The Apple Genius told me that my only option was a new phone for a buck ninety nine. Fuck it, it's my only phone, so I opted for it rather than screw with jailbreaking Mumbai style - via chinks which Apple's devs actively plug on occasion.
Apparently, the (previously owned) phone had all 4 submersion sensors tripped. Chris, you fuckin' douchebag!
The chick looked up from the cash register and said "Merry belated Christmas. No charge. Here's your new phone."
Fair enough. Thanks, Apple!