  A quantum jammed state can be seen as a state where the phase space available
to particles shrinks to zero, an interpretation quite accurate in integrable
systems, where stable quasiparticles scatter elastically. We consider the
integrable dual folded XXZ model, which is equivalent to the XXZ model in the
limit of large anisotropy. We perform a jamming-breaking localised measurement
in a jammed state. We find that jamming is locally restored, but local
observables exhibit nontrivial time evolution on macroscopic, ballistic scales,
without ever relaxing back to their initial values.
