@Pedagogue - just my opinion, but 'in retirement' and 'flew away' both mean to me what you intended. I've seen the former used in crosswords. And, as you point out, the latter has the embedded cunning of misdirection, ie that we might think 'flew' is being removed or anagrammated.
(PS This is not a comment on the clues per se, as we don't prior to the deadline for entries.)