Well Phil is back on the show. I think he never really left and it was all just a publicity stunt. And it worked. They had a record audience for their A&E Christmas Show which ran a lot of hours on the TV. They have an audience of about 14 million people.
Either than or A&E caved and put Phil Back on the Show when they realized that they would be losing millions of potential dollars if they didn't put Phil back on the show. Not only would the rest of Phil's Family leave the show but their followers were going to boycott A&E and all their sponsoers. Anyway A&E caved.