You have summed up in a nutshell what every WAS fears the most... as soon as you take their head off the chopping block (remove the D papers).. the old behaviours return.
Most everything I read about 'getting too comfortable too fast" meant at least a year with no replapse/abusive behaviour before one could say that he has 'changed'.
Given his porn addiction, affairs, etc... i would say that will mean lot of IC on his part to understand & overcome it.
Is he seeing anyone for that? Is that one of your conditions for reconciliation.. separate from MC?
good luck... I truly understand your fears, uncertainity, and cautiousness, as do other's on this board.
Peace Bridge
Divorced 03/2010 Mom to two amazing kids
Taking the road less traveled because those encountered on the way may be just as unique.