How do I solve 20 down in Daily Telegraph Cryptic 31238?

Question

Accepted Answer

20 down reads "Confused again as Pinochet's accepted" (2,1,4 letters); the answer is IN A SPIN. It's a letter-selection clue: take specific letters from a longer source. 'First of' means the opening letter, 'extremely' means first + last, 'regularly' means every other letter, 'oddly' / 'evenly' means odd or even positions. The full step-by-step breakdown is on this page.

Confused again as Pinochet's accepted (2,1,4)

20D — Confused again as Pinochet's accepted (2,1,4) — IN A SPIN