Sticking the landing

The BBC has an article about Philae, that landed on Comet 67P:

It took twenty years of work to get a robot lander onto a comet, but the video (above) the mission’s leader re-lives the uncertain feeling they experienced when it could have all ended in failure.
The big day has been and gone, so what happens next?
The mission to land a space probe on the surface of a comet didn’t happen overnight.
It took twenty years of planning, of meticulous attention to detail, a long, long journey that ended with robot spacecraft the size of a large dog flying 34,000 mph from the Rosetta space probe to rendezvous with a comet over three hundred million miles away from Earth.
For Stephan Ulamec, the manager of the Philae lander program, years of painstaking work was coming to an end at breakneck speed, and in front of the world’s cameras.
“You realise now, it’s not a simulation anymore,” says Ulamec. “You’re working for twenty years, and there is a risk that everything fails within minutes at touchdown.”
And something did go wrong. Philae didn’t land, at least not right away. The initial impact with Comet 67P sent the robot explorer rebounding a kilometer into space before descending once again onto the comet’s surface two hours later, and hundreds of meters away from its intended spot.
So what goes through your mind when you don’t know whether your twenty-year mission has been successful, and all eyes are on you? Watch the video to see how that tense wait unfolded at the European Space Agency’s control room.

Rico says that's gotta be a gut-wrenching moment...