The towering England international was given his marching orders for a second yellow card after just 15 minutes of the Santiago Bernabeu clash which Spurs went on to lose 4-0.
His Tottenham teammate Michael Dawson revealed that a sheepish Crouch made an apology to the playing group who now have their work cut out for them in the return leg at White Hart Lane next Wednesday.
"He (Crouch) was gutted," Dawson said.
"He apologised to the lads but we went out there to give our all and it didn't go to plan.
"I didn't see the bookings so I don't know if they were harsh. To have it happen so early on when you are playing a team like Real Madrid was disappointing."
As for the next leg, Dawson is well aware just how hard it will be but said the club cannot do much more than go out and give their best.
"We have to pick ourselves up again for Saturday (against Stoke City in the Premier League) and then we have the return leg at White Hart Lane," he added.
"There's 90 minutes of the tie left to play. We will go there, give it our all and see where it takes us."