Cryptic crossword No 2,258

Across

1. Degree obtained from some text entry! (6)
2. Changed ethos during introspective talk. Embraced different beginnings (6)
3. Not yet fully mature, but see they've grown extra long, prehensile tails (7)
4. Used in some ceremonies to enrage (7)
5. Aviators in acrobatic display making modifications (10)
6. Rush pig out back (4)
7. Benevolent annual traveller's satnav broke after losing back of casing (5)
8. Unexpectedly adjourned as ex facie positions exchanged in closed trial venue (3,5)
9. I'm leaving calcium content of slush to get mineral build up (8)
10. Pigment showing in loch reflection (5)
11. Capital city's messy loos (4)
12. Annoyed by clumsily shed coffee (7,3)
13. Problem! I left Jane Austen novel behind back of cupboard (7)
14. Rivals get the point of this attachment (7)
15. Tasteless skit performed in front of church (6)
16. Opinion held by blithe sisterhood (6)

Down

1. Mean energy organisation becomes liquid from the bottom up? (5)
2. X-ray's beam cut. Second charged atom exhibits stress (7)
3. Knocking back gin shots regularly precedes collapse at the end of the day (9)
4. Rings get minor dents and marks (5)
5. The last of a dozen thuggish outsiders follow goblin after loveless couple (7)
6. Police officers' route to dialogue (9)
7. Tory swore having suffered a head injury (9)
8. Maybe a pie in the face hits right mark (9)
9. Taoist interupted every leader (9)
10. So, so near but Charlie doesn't win first tournament (7)
11. Buried, chewed-up, headless mouse is gruesome (7)
12. Dotcom icon, to some extent, tells jokes (5)
13. Jumble sale with female jumpers? (5)