You need to talk to her and your eldest son so they learn to share their feelings with their father... The LAST thing you want them doing while he's wayward is shutting him out...

He needs to HEAR his children right now... Them tuning him out is not helpful to your strategy I don't think...

I know they are frustrated, but telling him "it's ok" when she would enjoy him being there is enabling him instead... complicated stuff I know...

I would steer him away from the laptop then... try to get the household pc fixed.

Since finances are such a tense subject for him you really want the ledger used by everyone... if S16 picks up some groceries, ask him to enter info etc...

Get that household PC fixed if you can... just format the hard disk and install the OS fresh

I was thinking about that you wanted to explain to your H about the psychological association you want to avoid...

I don't think he wants you explaining the psychology to him.. it will make him feel like a lab experiment... Its probably just best to tell him what you want to do and do it... no explanation, at least at the behavioural science level lol