OK. The Vet finally called me.
She said that I should stop the antibiotic cream in his eye and if it doesn't come back, he won't need surgery after all. YAYA
She said she's known of only a handful of cases where this has happened. Looks like he will only be getting neutered!
I'm going to move that closer to Beenies spay day - oct 27, at this point, so they will recover together instead of one then the other.
What a relief.