You people are gonna get sick of me.. one more point...
To look at this the MWD way : A leopard can change his spots and one person can change another
1. Your H was originally parading OW around town as his soul mate in the open 2. You "did something different" - you exposed the affair as destructive 3. He changed what HE was doing as a result of YOUR ACTIONS - he went into hiding and screwing around on facebook. Your H ended the public contact.
That happened because of what you did.. you can influence what he does... You just need to find the thing to do to make that happen... and ya, its very hard to find it.