Michael S. sure reminds me also of Scott Peterson as well as Michael Peterson and other men who have chosen to kill their wives instead of getting a divorce. One dentist in New Jersey, I believe, apparently murdered his wife so that he could sue the car manufacturer. The death was listed as an accident until the lawsuit brought out ugly facts.
Isn't there some was to get an attempted murder investigation going? Michael is just in too much of a frenzy to have his wife die. A normal person or someone who had nothing horrible to hide would long have given up.