  We study the decay of "false" domain walls, which are metastable states of
the quantum theory where the true vacuum is trapped inside the wall, with the
false vacuum outside. We consider a theory with two scalar fields, a shepherd
field and a field of sheep. The shepherd field serves to herd the solitons of
the sheep field so that they are nicely bunched together. However, quantum
tunnelling of the shepherd field releases the sheep to spread out
uncontrollably. We show how to calculate the tunnelling amplitude for such a
disintegration.
