With the curvic coupling still in place, the LP shaft is still in it's normal position. I doubt the shaft has moved back.
The distance we are talking about is only a few millimeters - I don't think the picture is good enough to make that determination.
You WANT the shaft to move and the blades to clash - suddenly unload the LP turbine by removing the fan and you quickly have a turbine running well above it's burst speed. Even if the N1 sensor is still working the FADEC can't pull back the fuel quick enough to prevent a massive uncontained turbine failure.