I will say this though, and think this out a minute.
I look at this from an artistic, Layout/design perspective.
If this scene was not to hide a giant, phallic pan, why lay it out as such?
Why have an obvious "head" shaped non-circle at the front of the crash site, with the plane at the tip... then a loooooong valley of stones finishing in a complete mess of rubble....?
I ran it by a BG painter in the studio and he laughed his ass off and asked the same question. Why lay it out as such, if they weren't "dicking around"? - as he put it.
Remember... in animation you're dealing with 30 year old man-children.
That said, it's Friday and "Beer O-Clock" in the studio, so I'm out!