Possible Clues:

• This won't leave the decoration alone, by the sound of it
• Tamper with said metal disc
• Be officious
• Interfere in other's business
• Put one's oar in, needing Olympic success in commentary?
• Stick one’s nose in, hearing gong?
• Reward for honoured folk is said to be fiddle
• Tamper, tinker
• Put one's oar in to reach sporting podium, they say
• Interfere in award to be announced