What did happen was that countries caved to US pressure to deny even the possibility of snowden passing through their airspace.
While that's absurd and a rather impolite thing to do; the moral issue there small or non-existant; denying a foreign diplomatic delegation the right to enter your territory is... perfectly OK, even when your motivations are at best dubious.
The fact that the plane even landed in Vienna at all might have been a (successful) PR stunt, since: An audio tape was subsequently released which appeared to be a recording of the flight crew requesting to land in Austria on the grounds they "could not get a correct indication" of their remaining fuel levels." - really? How convenient.
In any case it's nothing at all like the current case, except that it involved planes landing where they weren't originally headed for, due to political interference. Of course; superficial resemblances might be enough in the battlefield that is public perception.
Edit: and if you read some of the other perceptions here e.g. https://www.washingtonpost.com/news/worldviews/wp/2013/07/03... - this all sounds like a rather convenient storm in a tea-cup. Given the convenience to Evo Morales, it all looks rather suspicious.