The dismemberment might got confused with the scene where the cousins got sliced let's keep in mind alot of time have passed. As recently more and more statements from fans that are 'sure' to have seen versions in cinemas (mexico/germany) and on vhs/beta in the 70s/80s with the scenes intact (even saw-scene). The lobby cards of the scene and SK's statement added more fuel to these discussions. But let's face it after all these years of sharing and trading not even experts could unearth more than a handful of pictures. That doesn't mean there is no print left but likely the public is never gonna see.