"Carl's my teammate [at Roush Fenway Racing], so don't want him to be upset," Biffle said. "But there was a lot of risk in that from a driver's point of view."
Edwards, running second to Jimmie Johnson on the final lap, made what he called a "bonzai move" on the final turn, steering the car sharply inside and mashing the gas to get by Johnson.
But Edwards knew it would cause him to slide up the track and into the wall. Edwards brushed the wall and Johnson went back by him, but Edwards still finished second.
Johnson has a 10-point lead over Edwards in the Chase playoff standings. Biffle is 30 points behind Johnson.
"It was fun to watch and talk about," Biffle said. "But I would have to think long and hard about that move. It was a courageous move, but the risk isn't not winning. The risk was not finishing second.
"So many things can happen. One, if he didn't clear [Johnson's car], both of them are in the fence. Second, these cars are not like the video game. You can break things. You could break a ball joint, a hub, a brake rotor, especially when you hit the fence."
Edwards has no regrets and no second thoughts about his decision.
"I don't care what anybody says," Edwards said Friday. "I did what I thought was best and I would do it again in a heartbeat."
Edwards was prepared to bang the wall, but he didn't think he would hit it as hard as he did. Biffle said he realizes Edwards wasn't acting impulsively.
"It wasn't sporadic," Biffle said. "Carl thought it out. He knew it would skim the wall a little bit, but a lot of things can jump out and bite you."
Edwards was roundly praised by fans and reporters for not points racing and going all out for the victory. Some drivers feel the same way.
"That was an impressive move that Carl made and I give him a lot of credit," Jeff Gordon said Friday. "He brings a lot of excitement to this sport. And it's things like that between two of the top guys in the Chase that to me, that's what this sport's all about.
"I applaud Carl for making the move, and I applaud Jimmie for counter-acting the move and winning the race."
Jeff Burton, who ranks fourth in the Chase standings, agrees with Gordon.
"I thought it was cool," Burton said. "He made a move to try to win the race, and did it in a way not to keep Jimmie from winning. Carl hung it out there and I think he did the right thing. There's nothing wrong with it."
Biffle was asked it there is any scenario where he would attempt a similar move. He mentioned Homestead-Miami Speedway, the final race of the year.
"Maybe in Homestead if it was for the championship," Biffle said.
Terry Blount covers motorsports for ESPN.com.