I think the 5 - 10 % is a very generous estimate.
After too many years of popping in and out of these boards I have lost count of those who have posted joyously about peicing only to see quite a few pop back to say it all went pear shaped.

So sunshine for now my best advice would be to move ahead and consider X husband well and truly gone.
I am sure you could / would be open to hearing him out should he ever have a change of heart,but for your own growth and state of mind don't even think of a return at this juncture.

It is all about you from now.