No but the part isn't there for performance and presumably harms the aero. If you're allowed to 'lose' it part way through the race with no collision then what's to stop the teams designing the mounts to fail?
Merc gimping Rosbergs race, that'll go down well.
Merc gimping Rosbergs race, that'll go down well.
Merc gimping Rosbergs race, that'll go down well.
He's gonna have the fastest tyres at the end. I think he's got 3rd place secure at the mo.