I could scream,

Both sons just reached a place where they are getting on with their lives. They feel detached enough and safe from the stress the seperation first caused.

This week the eldest recieved a call from MIL, telling him that his dad misses him, loves him but is afraid to call him in case he son doesn't answer. WTF...

Who is this about.. How can MIL go along with this, my parents would be dragging me to son, even at my age.
I feel it is an excuse, he doesn't want to hear anything negative so he put the emphaisis on son's attitude being the obstacle.

This is so not fair on the lads, each time they stand up H knocks them down again, the good thing now is that they truly understand that this has nothing to do with them or me, so they pick themselves up quicker these days.

I don't think MIL realises that she is adding fuel to the fire, and actually prolonging the troubles.