Your children are a factor in your H crisis. Seems like your H has a rigid ideas about desipline which may not be so effective given your boys age and temperment. Since all he knows he is how to rule with an iron fist yet subconsciously he knows it will prob not be effective with his boys. He cant bear to be ineffective parenting his boys. Part of his decision to walk away is because he is afraid of their teenage years. If he leaves he will not be ineffective, and it is not his fault that he has to leave its your fault.
(My diagnosis based on following your sitch for 9 months, take what you like..:)
---- M 39 H 35 D5,D4 M 4 T 9 ILYBNILWY 5/18/11 Left 7/11/11 Divorced 12/1/13