Never hurt anyone to check with the cabin and get a photo shot of it;-)
Pan Am had one back in the 90's where it really did seize just after rotation. They cleaned up the aircraft and made an uneventful ATB
The third guy in the cockpit went back to take a look over a womans shoulder and related that he saw a big gaping hole in the aft section of the engine. The woman remarked that she saw flame out of the engine and was concerned. He told her it was nothing to worry about an went back to the cockpit and said to the pilot wholly ch***t there' a whopping hole in the side of that engine you can fit your head in!!
I heard this from the guy himself who flew the next day's aircraft back to JFK