No he did not mentally.
Nadal may have beaten him, but Federer thought
he could beat Nadal. Federer knows he cant now
unless Nadal is way off.

Even with his tremendous ability,
Nadal has exposed the mental side of Federer.
It became clear to me in the last French Nadal destroyed
Federer. And then at Wimbledon this was born out.
Its not surprising, tennis is very tough too
stay on top of mentally.

Nadal's strength is Federer's weakness.
But I dont think Nadal will be around as long.
I think he is more likely to run into injury.

all imo opinion of course...