The aircraft is definately NOT a flyer (yet) and appears to be getting cleaned up as we speak. What look to be spurious markings appear to be painted over one section of the fuselage, though the original markings can be seen just below this.
The fuselage appears to have definately been submerged at some stage.
The above photo of the BuNo 82640 fuselage does look similar to a piece of Corsair which has already been rebuilt at Wangaratta. However this aircraft is a F4U-1D type, whereas the pieces I saw were FG-1D (as printed on the original tail markings). It is possible however that there is more than one aircraft present (though it doesn't look like it).
I guess the BuNo 87853 could have been mistaken, though without seeing photos of this aircraft, I cannot confirm this. I've checked Landings.com for details on N9152Z and returned the following:
N-number : N9152Z
Aircraft Serial Number : 87853
Aircraft Manufacturer : GOODYEAR
Model : FG1D
Engine Manufacturer : P & W
Model : R-2800 SERIES
Aircraft Year :
Owner Name : MILLER MALCOLM L
Owner Address : 1350 LINHERE DR
CARPINTERIA, CA, 93013
Type of Owner : Individual
Registration Date : Not Specified
Airworthiness Certificate Type : Standard
More details on a couple of the FG-1s can be found at:
http://www.airpirates.com/gallery/LAKE_WASHINGTON
(BuNo 88382 and 88368)