Finally got it to reset after messing with it all day. Flung myself off a cliff about a dozen times and died. You're surprisingly resilient when it comes to taking damage from falls.
Anyways, after dying, water behaves like water again. …
I went through a warp gate while in my prawn suit and appeared in the wrong location, it's acted like I've been on dry land since. I made it to my base, which was hell, hoping entering it would sort it all out, but it didn't.