What does the cryptic crossword clue "Supporter's trust slightly disturbed, with second coming first (5)" mean?

The definition is "Supporter". The wordplay uses an anagram. anagram of TRUST = STRUT; definition: "Supporter's" The answer is STRUT.

Supporter's trust slightly disturbed, with second coming first (5)

Times Cryptic #28820 | 12 Across | 2024-01-23 flower