07/26/2013 04:42 EDT | Updated 09/24/2013 05:12 EDT

Spain train crash survivor describes 'gruesome' scene

U.S. Mormon missionary Stephen Ward was living a nightmare when he awoke from his blackout and saw dozens of fellow passengers crying, bloodied and in pain after a deadly train crash in Spain this week that has led police to detain the hospitalized driver as a suspect.

Ward, an 18-year-old from Utah, was injured in the crash in Spain's Galicia region on the outskirts of the regional capital, Santiago de Compostela. However, he told CBC News in a phone interview Friday after his release from hospital that he's "on the mend" and grateful he's alive, since dozens died in the tragedy.

"My overwhelming emotion is gratitude that it wasn't worse for me," said Ward, who left hospital in a neck brace. "I was not the only one covered in blood. There were lots of people crying. Lots of people in a great deal of pain. It was pretty gruesome.

"I'm grateful that I came out so well. I'm sorry so many people passed away. I was the last person they pulled away in an ambulance."

At least 78 people died, and more than 140 were hurt in one of Europe's worst rail disasters. On Friday, police lowered the death toll from 80 while announcing that the train's driver, Francisco Jose Garzon Amo, was officially detained in the hospital where he was recovering.

Jaime Iglesias, the National Police chief of the Galicia region, said the driver was being questioned as a "suspect for a crime linked to the cause of the accident." As well, police have taken possession of the "black box" of the train that is expected to shed light on why it was apparently going faster than the speed limit on the curve where it derailed.

The box records a train's trip data, including speed and distances and braking and is similar to flight recorders used on commercial airplanes. Court spokeswoman Maria Pardo Rios said analysis will be performed on the device, but she declined comment on how long it will take.

Train's speed in question

Ward was quoted in an earlier report by another media organization as saying he saw on a TV monitor screen inside his car that the train was travelling 194 km/h seconds before the crash. That's far above the 80 km/h speed limit on the curve where it derailed.

However, he told CBC News that he's now not certain of the speed on the screen before the derailment.

For most of the ride, the speed was at about 100 km/h, he said. At one point, minutes before the crash, he looked over at the screen, which was on the other side of the car, and it appeared to show 194 km/h.

"The sun was kind of shining off it, and I don't have the best eyesight, so I thought, 'Oh, that can't be right. It must be 104.'

"It didn't feel that much faster, but it could have been. I was writing in my journal at the time, so I wasn't paying that much attention to speed."

Civilians also helped crash victims

Ward said that before the crash, the train started leaning to one side for a couple of seconds.

"We had just gone around a couple of sharp curves, and so first it seemed like one more sharp curve and you could feel one set of wheels lift up off the tracks. There wasn't screaming or anything, but people were just kind of, like, 'Whoa, we're leaning pretty hard.' And then we flew off the rails.

"It was all very sudden," he adds.

After the crash, he blacked out for a few minutes.

"The next thing I remember is them helping me out of the car," he said. "I was very lucky. My car ripped apart from one of the cars next to it, so they were able to help me out through a door rather than a window. And I was one of the first people they got out. I thought it was a dream ….

"They helped me out of the car and out onto a little bank of land nearby [the crash]. And I was there for a couple of minutes before I began to suspect, 'I think this is real life. I think this train just crashed.'"

After coming out of his blackout and witnessing the mass carnage, Ward noticed the paramedics and some civilians who had also come by to help crash victims.

"I have some good bruises, some scrapes … a neck brace, but nothing that won't heal on its own."

In the meantime, the driver is under guard by police, who say he cannot yet testify because of his medical condition.