but seriously, in my opinion, once trophies have been awarded the only thing that should be able to happen from that point on that affects the result should be a disqualification due to serious technical infringement discovered after the event. If there is an on-going stewards enquiry, either delay the podium or impose the penalty at the next race.
What if an up and coming driver that has never won a race gets second and collects his trophy. Then gets told an hour later "oh, by the way, you won, Nico will be round in a minute to drop your trophy off, and no you don't get the dreamed of moment of glory you've worked all your life for, and no, nobody will see it!"
I blame the stewards! Poor show!