The case of the Jiggly Wires

Video by Gavin Wince shared by the auhor in the comments of this complete and ultimate post about OPERA's neutrinos by Matt Strassler.
On of the most interesting observation in the post was resumed in the following plot:

We could conclude that the problem was originated in 2008.
In every case I'm agree with this Strassler's questions:

A big question that the OPERA leadership that resigned today has to answer: why didn’t they do this cross-check before they made their result public? Did no one think of it til recently? And if not, why not? Was it harder than it sounds? Or did they just miss an obvious opportunity?