1 Presbyterians converted pop star (7,6)

 9 Nearly remember one that’s tagged within concert (7)

10 Live inside of obese eccentric (7)

11 Choice of Ford models with a large vessel (5)

12 Episcopal stirred a soft drink (5-4)

13 Came down hard and saluted (6)

14 Drifting agnostic goes to hell (8)

17 Satanism defiled part of a log (8)

19 Nook with a flame limiting start of conflagration (6)

22 It might come from a pig: kind of spray on individual’s face (9)

24 One charmer in a picture (5)

26 Neoconservative paragon incorporating 1970s self-help movement’s overall pattern (7)

27 For example, Hemingway’s faction hijacking stripped Buick (7)

28 Allowance is imminent between Sunday and Monday, at one day’s close (8,5)

 1 Yogi’s degree concealing blunder (5)

 2 Incorporated in sour, irrational attack (9)

 3 Sean cut crumbling fruitcake (7)

 4 Named bicycle “Pterodactyl’s Guts” (6)

 5 Ring up Winnie to express impatience (4-4)

 6 Air Force exhibitions for business (7)

 7 I make notes, perhaps! (5)

 8 Last bit of fuel caught in foreign throttle (8)

13 Internet location’s tribute involving record (4,4)

15 Quarantine lunatic into a silo (9)

16 Mixed morass or tedious excerpt (8)

18 Repeat something on a list, nearly at speed (7)

20 Sort of Islamic philosophy of church-state separation (7)

21 Makes a pass at Shinto stranger (4,2)

23 Sends assignments (5)

25 Sorrowful poem set amid the old uprising (5)

ACROSS 1 LACE + RATIONS
9 ASSE[n]T 10 CLASS + MATE
11 2 defs. 12 FE + MALE
14 F(ACSIM)ILES (scam I anag.)
16 F[our] + IV + E (&lit.) 18 [i]S + AN E 19 LE + F(TWINGE)R 22 PAT + RON 23 P + R(E)AMBLE 26 ELUC + I + DATE (clue anag.) 27 ID + I(O)M 28 anag., &lit.

DOWN 1 “list” 2 CAT-HOLIC
3 RECON + SIDE + R 4 anag.
5 [j]OUSTER 6 anag. 7 [p/L]AYOFF
8 2 defs. 13 YES + T(E)RY + EAR
15 CONS + TRUES 17 TI + RAM + I + SU (rev.) 18 SUP(P)ER 20 “roomy” 21 NO VICE 24 B(RIB)E 25 T(AX)I