Who is this Kubrik guy? The fellow who invented that cube? ;)

Kubrick's 2001 trims were well documented before the internet. Even the official making of book from the early 70's mentioned them and had a still or two. Would be nice if we got to see it for the 50th anniversary in 2018.

In any case, Stanley used opening weekends/limited runs the way other filmmakers used preview screenings. The Shining lost an entire scene at the end with Wendy and Danny safe in a hospital, for example. That's different than radically altering your film twenty years later.