IT has been a possibility since day one....
I read this yesterday and thought this certainly Makes sense. I understand another search is being done.
It’s highly unlikely that he would have planned on attempting a soft water landing because his planning was too meticulous. He would have known that, best case, ditching with the plane intact would have left him adrift at sea in an airplane full of dead bodies. Worst case, it would have broken up on landing, probably leading to a torturous death (for him) by drowning.
Knowing the fuel slick would have been a marker buoy to the crash site, he’d have flown it until it was low on fuel, then firewalled the throttles and nosed it over to put the air speed indicator on the barber pole until impact.