Slushbox Bush Fix

After attempting to help a hapless delivery driver with a totally waller'd transmission rear main seal that was leaking at a completely unsustainable pace it occurred to me that threr might just be one more way to get the bleeding beast back to civilization. Although I didn't have the relationship with the man to propose such an audacious idea my thought was this: Given that the rear main is in a non-pressurized portion of the case exposed to the same "airspace" as the pan could a desperate person just trying to make their way to civilization share the advantage of the natural anti-leak (of fluid) benefit of crankcase vacuum that we harness in the engine crankcase to the gasoline engine (pcv) to greatly reduce the pace of a seal leak in the automatic transmission. The idea is to remove the line that runs to the airbox and provides the engine with clean replacement air to the transmission dipstick and fill tube. I realize that the transmission has a small vent which will somewhat reduce the efficacy and might need to be capped off somehow if the situation is desperate enough.I believe that this might work enough to get a person out of a pinch and intend to test it at the next opportunity which will hopefully not be any time soon.