In the replay on youtube-
First set, 2-2 Nadal serving, he goes down 0-30.
At 0-30 a Nadal UFE. Plenty of cheering and clapping, nowhere near as much as when Nadal wins a point, but plenty.
At 0-40 a Nadal UFE, a shank. Plenty of cheering and clapping, nowhere near as much as when Nadal wins a point, but plenty. People in the crowd waving Russian flag.
Med should have just accepted that 80% of the crowd wanted a Rafa win, and a few of that 80% are idiots, and got on with it. If he becomes a ten slam winner the same people will be cheering him.