Thank god for de Forest research, keeping things accurate as always
From reading Cushman's book it seems as though there was a bit of friction developing between John Black and Roddenberry over GR's changes to Johnson's script. Black felt GR should have left Johnson's work pretty much alone.
Cushman blames late Gene's revisions for lines like "go chase an asteroid" and "do you suppose he's gone space happy?", but credits him with adding this chilling line from Crater :
KIRK: Where's your wife? Where is she now?
CRATER: Dead. Buried up on the hill. It killed her.
CRATER: Oh, a year, or was it two?