I would like to comment about your stitch, but I'm not very good with words.
One thing going for you is your H is still religious. Another thing is he enjoys mowing that huge area.
With religion he knows the different between right and wrong. I think he's trying to cope with what he's done. I think you need to respect that and give him as much space as possible. I also think you should put up as much resistance as you can when it comes ot the divorce. Since I haven't been served I can't help you there. You may want to ask others some stalling techniques.
When he mows the lawn I believe he's thinking. Replaying every event in his life which led to where he is now. All you can do is enjoy life and show him you've changed. Don't point out any changes to him or he'll think they're fake. While he's mowing the lawn get him a cold drink to quench his thirst. Act like he's doing you a big favor and nothing is bothering you. If he brings up the D try to change the subject but don't be too obvious. End most of the conversatons before he can and don't be rude about.