Flip-flop solution
by Kegler

Per the unclued phrase, ONE EXTREME TO THE OTHER, eight answers are replaced by their “opposites” before entry.  NAUGHTY for NICE is admittedly a stretch.

Flip_flop solution grid

Across
7DO + T
8SILICON (IN COILS anag)
10SNAP + SHOT (PANS rev; HOST anag) [COLD for HOT]
13TEAM (TAME anag)
14B(R)IGHT [WRONG for RIGHT]
16NEB (BEN rev)
17ARE (ERA rev)
18TIMPANI (PAINT I'M anag)
20EIDERDOWN (I WONDERED anag) [UP for DOWN]
23SI(P)S
24S(NUG)LY
25L(E.G. + P)ULL [PUSH for PULL]
29I + L,K
31TAP (hidden)
32REISSUE (hidden)
Down
1EVENTUAL (VALUE TEN anag) [ODD for EVEN]
2NOSE ("KNOWS" hom)
3ETNA (NEAT anag)
4XI + P + H(O)ID
5RICE (hidden)
6MOLT + E + N
9COR(NICk)E [NAUGHTY for NICE]
11SON ("SUN" hom)
12DISMALLY (SLIM LADY anag) [BIG for SMALL]
14BRA + I'LL + E
15WEE + P
19ME + N + US
21RUS + SET
22PLA(C)ID [BASE for ACID]
23SKIRT (2 defs)
26GAS + H
27P(OS)E (SO rev)
28S + PAR
30KIT (2 defs)