I would hit it with some "SaltAway" or a white vinegar and water solution to make sure that most of the salt crystals are neutralized.
Then hit it with your penetrating oil again and then wipe up as much of it as you can.
If you have compressed air, use it to dry out all the nooks and crannies like up under the flywheel.
If you know what you're doing, you can remove the flywheel to make sure you get everything clean and dry up under there.
But, if you don't have the puller or have never done it before, just use the compressed air and keep it simple. It should clean up well enough that way.
WAY, WAY better than taking the engine apart!
Good luck and let us know how it turns out.