I am fairly hopeful a complete disassembly, inspection, and cleaning of any salt would likely be possible, depending on how the camera was designed.
The salt water in my friend's new Nikon 6006 I had just sent her, just found the exact place to fry things, the camera was inside a Domke, and I could find no water in it, yet when the bottom plate came off, there was rust. It was not immersed -- just bad luck-- but I was on an island with a great model-- I was fortunate my MF equipment was fine and the wine was corked.
The store where I purchased it and I have a long history, they sent it in, Nikon laughed, and the store found a refurb to replace it.
The fact that your camera is still working is a great sign that they know more about sealing a camera than the old Nikon folks.
I hope they made the camera to be serviced, if not, the price right now on the body is quite reasonable, though you missed a rebate by about a week that just about gave you a lens-- I think the X Pro is a good camera to spend your money on (more if necessary), but I repeat that if you own a home, the inland Marine policy that covers all risk is probably about the cost of postage for sending it in.
If the camera is brand new, you may have some insurance via your credit card, -- my clothes bought for the trip were boiled in Paris, and Amex just said to send them in for a credit.
Regards, John