My memory, in Anders case, was that he was to change into clean kevlars in the pits prior to the podium presentation.
But having removed the dirty ones found his clean kevlars had already been already taken out to the centre of the track by someone.
He then went out on his bike in his undercrackers and suited up on the back of the podium.
There may be variatiions on this.
I don't think any of that spolied the series sponsors 'exposure'.