At Vancouver there was also a cauldron related malfuction and a death at lugo, Sidney had wrong vault height, things might happen in such big event, so I dont think Russia's fifth ring was the only thing ever happened and it was too little comparing to their spectacular ceremony. Also there have been controversies over results, like in gymnastics 2004 all around men, or home advantage controversies like Final rings men.
Well I was in SOchi and I dont agree with the worst destination ever, while it didnt have any rich heritage like Moscow or St Peters, I think this is the reason it was easier to hold Olympics there, not much "distractions" so we had all day to run in the parks, mountains, the sea, great GREAT weather, I didnt feel the security worries, they had you checked in detail when entering the train wchi took you directly yo Oly park, by arrival the immigration procedure was really fast, airport is small and looked clean and new, the city from the airport was too close by the super new trains, that where a dozen an hour and punctual, we transfered from mountain cluster to coastal one daily back and forth, the scenery was amazing, you could see from the beach the coastal venues, the flame and above them the snowy mountains, the Olympic Park was huge and they even had electric cars for people who could not move, volunteers were very helpful and cheerful, the two three arenas I visited were really cool, food outside had all sort of things, fluffy mascots, my top on the list is the palm trees by the beach! Olympic Village was nearby too, behind arenas. I dont know if I would have this fun in a large city like Moscow, too complicated..
I was also volunteer in Greek Olympics and I hold sentimentally high the opening and closing ceremony there where I took part, but I loved Russia's ceremonies,the colors , the music, the floating stuff, the