Zack Smith shot the rebound of Hoffman's shot past Mrazek at 12:05 of the second period, but the Flyers challenged and video review determined that Smith was offside, negating the goal that would have made it 2-2.
"[It] could've been a big turning point in the game," Flyers coach Dave Hakstol said. "The fact that that was turned around was a real important part of the game for us."
Ryan Dzingel one-timed a pass from Smith from the top of the left circle to make it 5-2 at 16:47 of the third period, and Matt Duchene scored on a rebound at 19:03 to make it 5-3.
"We'd been playing some good hockey up until the last few days when things started to happen (trade rumors)," Duchene said. "It's tough, and we've addressed it a little bit in the room here, but it's human nature: When you don't know where you're waking up tomorrow, trust me, I know, you're not sure what's going to happen, it's really distracting."