Maybe that things have gone too far? If he were to divorce her now, he could be liable to pay all the money back to Terri that he spent on lawyers. And there is the matter of fierce pride, revenge, and winning imo.
Excellent point! It certainly has momentum of its own.
Still, that facet doesn't seem to explain the extraordinary half-million-dollar snuff effort by a man who not so long ago worked at McDonald's and was too poor to rent an apartment.