Help! Can I salvage a soggy crust (water bath leaked)?
Gosh, what a disappointment!
Hopefully your cheesecake was completely done when you discovered it. Give it a good chill in the fridge, then take the top part off the crust.
That isn't as daunting as it sounds. Gently lift up an edge of the top part and slide the widest spatula or pancake turner you own between it and the crust. Rotate all the way around the crust. Tricky but not impossible...
You might be able to put the top back onto a new crust. Maybe a round of shortbread-type cookie dough? Or, if that doesn't seem feasible, just serve wedges of the top.