Being a cynic, this basically put the gun to Nokia’s head and pulled the trigger. The basic fact is that if you buy a Windows phone today - you are buying an orphan.
This is exactly what Nokia didn’t need. Basically, this means that the 10,000 layoff will just be the tip of the iceberg.
Or, if you are cynic like me; this was intentionally done to drive the value of Nokia into the dirt; so MSFT can buy them for pennies tomorrow. Stab your business partner in the back today, then take everything he has tomorrow.
Nokia had to know that without hardware encryption capability, those W7 phones were just a sacrificial placeholder.