I can't work out what the theme means either, apart from the middle section of each clue being the actual clue, in the format "[other stuff] to [actual clue] without [other stuff]?"
Also, you've got a couple typos in the clues:
32 Across has an extra "a".
The clue for 22 Down22DShow up at by schooner[------] isn't parallel with the answer unless you add a preposition, like "show up at by schooner."
Fun puzzle! I learned a new word in 16 Across16AMeasure of reflectivity[------].