Over the years I have seen and read numerous ASR's/reports of incidents during push back on J32's/J32's/J41's, Bar's breaking, uncarrages collapsing steering racks getting jammed and even getting pushed back onto the grass!!.
This is the first one that I can think of with crew going back to far during power back. And I watch for these things to put out in safety updates where I work.
There are reasons why sometimes the power backs look a bit sporty especially in Aberdeen is there is often a drain which collects the run off between apron and taxi way. If you don't get a bit of momentum going you can get trapped in that without out enough umff to get out of it backwards. Said drain in ABZ has been known to defeat a tug with a heavy aircraft and slippery apron and I would hate to imagine the forces on the nose gear with a single point of force and trying to shove ten tons over a curb and up hill.