I am not a phisic, not a researcher so this is only my personal think.
Subnuclear particles are not like common objects in our every day life. We think at them as objects but i think we are far from a complete definition and understanding.
In the Einstein–Podolsky–Rosen paradox the phisics have some problems in make speed and position measurement.
So this neutrino maybe have no reason to follow the same behavior of common objects moving from starting to the ending point.
Maybe this neutrino can move in a path shorter then the 4 dimesional geodedic surface path