Memories of Andres Frisk
In the first leg of a 2005 second round match against Barca, the referee Andres Frisk sent off Drogba, which prompted Jose Mourinho's launching of yet another bizarre conspiracy theory that the referee had met up with then coach Frank Rijkaard before the match.
The Swedish referee was forced to retire after he and his family received death threats.
UEFA keeping that context in mind is going to be less charitable towards Chelsea's over the top reaction which might encourage fans to do the same with Ovrebo and his family.