I've never seen that version of the script.
Mmmmm. I thought
that scene was in my Lincoln Enterprises version of the script. Kirk and Alexandra are swimming when Kirk gets the message about the approach of the cloud entity and the destruction of the Klingon ships. My copy is packed away.
I also recall the former poster, The God-Thing
, mentioning/remembering it - which makes me wonder, now, if that the scene was also in Roddenberry's lost/unpublished novel? But I certainly haven't read "The God-Thing".