From the pic angle it looks as though the right wing is about to fold up. Look at how much more it looks flexed than the left wing. Also where is the 4th. contrail?
Very cool pic
I'm unsure if you're just making a comment or a genuine question:
The gap in contrails from our viewpoint is between #3 & #4.
#1 & #2's trails are seen combined beneath #3's.