Sorry to hear this. Sometimes the person leaving the relationship can be angry about leaving because of the consequences or because it didn't fix the problem they were trying to fix or even because they still blame the person they left for making them leave.
What can you do? If it was a stranger, you'd feel kind of sad for them that they are having such a hard time.
M-47,W-40,No kids D-filed 5/27/2010 Piecing - 10/21/2010 -=Soon to be banned=-