Curious, Curious Damage Caused by a Wing

(as always, click to enlarge image)

From the NIST report:



Amazing, the different patterns of damage done to the columns here.

But most odd, I think is what I circled. How is it that a wing can totally smash INWARDS one column, and the the next column over, merely fray the edges of the column off? Moreover, what caused the column edges to get knocked OUTWARDS?

Here's a different view of the same thing:


In this view, note the two columns just to the right of the bashed in column-- look how amazingly cleanly they've been cut. Did an aluminum plane wing do that?