I don't know what the scene is, and neither does Cushman by the looks of it.
My point was that this sequence of events:
1) Cushman sees Budd Albright in "The Man Trap", thinks it's Bruce Hyde
2) Cushman infers that a pick-up scene was filmed during "The Naked Time".
Is more unlikely than:
1) Cushman reads a source saying pick-up scene for "The Naked Time" was filmed during "The Man Trap".
2) Cushman sees Budd Albright in "The Man Trap", thinks it's Bruce Hyde and concludes this was the scene in question.
I'm not suggesting this is evidence for anything, but Occam's Razor and all that. Cushman would have to provide that source or admit to making it up.