There may be some merit to Shank's Footy Tardism theory.
Full credit to Rosol for completely disrupting Nadal's rhythm based game.
What forum member(s) do you know who've recommended this strategy for beating Raf?

I only saw a replay of the full 5th set.
Flat out, the most stunning display of attacking tennis I've ever seen.
I think this even tops Safin's upset of Pete in the 2000 U.S. Open.
Lukas was playing like a man possessed and you could see it in his eyes.
At no time did he appear to feel the pressure of the moment or let up on his relentless attack.
Keys to the match-
Refuse to rally with Rafa.
Force him to play by the rules and at the specified pace.
Hit nearly every shot for a winner.

Relieve yourself from expectation and play in the moment. No past, no future, just now.