Just a speculation from an amateur layman,
After all, Kjos has pulled off what's almost impossible, becoming a billionaire in Scandiland.
I would guess that he knows exactly what he is doing. A carefully planned and choreographed manouvre.
Since there are big debts (huge amounts of pax compansations and some bad financial decisions) and hedgecosts for the coming year budgeted for, on the balance of the previous year (2015 costs budgeted in 2014), I think that this is just a manouvre to dump the parts of Norwegian having costs and debts, thus, shafting customers, pilots and suppliers. He will get rid of NPU at the same time. He knows that the lower the price is, the shorter the memory.
I have a feeling that he wants to run the unhealthy (from a beancounters point of view) parts into bancruptcy and then blame the pilots and unions in order not having to face the bad will and the legal liability for his debts. What will be left is a brand new Ryanair. Or will they finally merge?