Yes of course - but the answer to 1A should not depend on a bit of the end game. All clues should lead unambiguously to the answer. I don't think Nimrod noticed that the clue - to which he naturally knew the answer - could be interpreted in 2 distinct other ways. That's where test solvers and editors earn their crust. Ximenes once set a complete puzzle on 1 April where - apart from a single clue - every one produced two possible answers, and they all fitted. Getting the single clue with a unique answer determined which set of possibilities was correct. But that isn't what's happening here. Homer nodded, but is forgiven. (Hint: cockie has been known to set now and again ...)