Possible Clues:

• Austere detectives in CIA sent back
• Essene, for instance
• Article rejected quotes about conservative man leading disciplined life
• Hermit, say, is sour about Society
• Stern and bow of ship going in one sudden movement
• Excellent movement drawing in singular religious follower
• Antithesis of a hedonist
• A doubter must lack pressure, being 25!
• Refer to leaders of cult seen as backward or severe
• Australian unusually cites creed's opening, being of austere outlook