Your sitch always has confused me with the way your H took off .. but not like there has been a hint of OW, just seems he needs some time to sort himself out and if thats the case he is not so far gone to realize adding things would hurt more then help.
You might be on to something with changing the house up so much it no longer feels like 'home' to him, I am not so sure this is all bad, shows you are still living your life and if need be can go on without him. My W said something the other day that back in Dec I did something that showed her I was moving on with my life ... seemed to start the avalanche ... she is still not out of the tunnel but just for research I am curious to know what types of things can be small smelling salts for the crisis if there is such a thing ... like everything else .. what works in one will not matter in another I suppose.
Glad you are enjoying yourself, I am craving a good BBQ at the moment ... lunch is close ...lol. I will eat my pasta and dream of ribs instead