The Portuguese's surprise dismissal turned out to be the turning point in the
last-16 second-leg clash.
United leading thanks to Sergio Ramos' own goal early in the second
half, they were suddenly up against it when Nani was given his marching
orders for a mid-air challenge on Alvaro Arbeloa - to Giggs' incredulity in
his 1,000th career match.
"I'd initially gone over to tell him Nani was looking at the ball,"
Giggs said in an interview with the Mail on Sunday. "I've gone back to
my position on the edge of the box, because they've got a free-kick.
"I was actually looking at the referee when he did it (showed the red
card). I've never, ever experienced a shock like it on a football pitch
because I just didn't expect it. And I've never seen a stadium in shock like
Madrid boss Jose Mourinho brought on Luka Modric, who levelled proceedings
with a fine individual effort in the 66th minute and United old boy Cristiano
Ronaldo completed the comeback almost immediately afterward.