Hi Henra,
The N-S extension of the trail is mostly below 100m.
Please check your scale. I see large components of the wreckage spanning 180-200 meters in the N-S direction. They are located both south and north of the centerline, part of the 'outliers.'
I've added arrows to some apparent large chunks of wreckage using PickyPerkins' original graphic. You can see that they appear to relate to the original size of the aircraft fuselage, but sonar returns can be tricky to interpret.