The edit was locked a couple of weeks before he died, and mostly unchanged. That's gotta be the ending SK intended!

• There's something we need to do as soon as possible.
• What's that?
• Fuck.

Cut to black.

That's an awesome ending!

I'm pretty sure I learned about this in a Reddit AMA with his daughter Katharina - some shots were cut out from the orgy scene, the reason being Warner Bros had contracted Kubrick to produce an R rated film. That had to be done after his death, but it's likely he would have agreed to those cuts anyway. Let me try and fish out a link to that!

Of course, there might some regional versions that were horribly censored, but the master copy was as he intended.

Edit - Found it! https://www.reddit.com/r/IAmA/comments/134rvs/stanley_kubricks_daughter_katharina_kubrick_and/c70xidf/?

So he did participate in the censoring just that it had to be executed after he died.