Yes, this is exactly what bugged me about the final extraction-- that it wasn't an exact parallel to the similar bits from earlier in the puzzle. There was nothing to suggest that even one half of the clue phrase would be missing a letter, much less *both* halves.

I think Codex did even consider "crotch a.k.a. powerize" as an interpretation at one point, but of course that didn't turn up anything meaningful, so we abandoned it. It never occurred to us that "powerize" could have been missing a letter as well. (And I helped solve an earlier puzzle that clued "powder" as "power" with an added D, even!) "Powerize" just sounded too much like a word that was meant to be taken verbatim.