It seems as though moving on without Paul Walker is proving to be quite difficult. While promoting the documentary Battered Bastards of Baseball during the Sundance Film Festival,Kurt Russell, who plays Walker's "father figure" in the upcoming Fast and Furious 7, opened up about reworking the franchise after the actor's death on Nov. 30.

"They're having to rewrite, they're having to do whatever they're having to do to deal with the situation," Russell said, according to BBC. "It's catastrophic. It's the worst thing that could happen to a movie -- but it's not as bad as what happened to Paul."

"So everything is in perspective," continued the 62 year old. "He was a terrific guy. And life is full of curveballs. It's just a situation that they'll work out and, at that time, I'll go back to work."

The Overboard star revealed that he only had "one day left" of filming before Walker's death. The actor also said he was still unclear how the writer's were changing the script. "I don't know what is going to happen with that. It's obviously a difficult situation."

He also admitted that he still didn't know the fate of Walker's character. "Whether or not this guy dies off in the movie, we don't know. That may have changed now significantly too," said Russell.

Fast & Furious 7 is slated to come out in 2015.