I would completely disagree with this. Olympic play is different than regular Eurocup or league play, with different style, different refs and different venues. Big V has played in the European championships, the junior championships etc. He has already been on plenty of big stages.
You might be onto something here. I believe Eurobasket 2011 was in Lithuania so he was playing right in his home country.
I don't believe there is any choking going on at all.