I do not think that Rosol intimidated Nadal in any way except the extraordinary quality of his tennis. Nadal had a grumble about Rosol at one point, but I could not see anything wrong that he had done at all - and neither could the commentators. Nadal was most ungracious in defeat.
Who knows what Rosol will do next? - it is strange to call his play a "freak" as it was very consistent throughout and if he is capable of doing this, he can do it again, if he does not get overawed by the pressure of being in the next round. But we have seen this situation before where an outsider knocks out a top player and then goes on to play a hopeless match in the next round.
Nadal should put his feet up a bit - his rituals are getting out of hand, poor chap.