One other thought, and there is no doubt this happens too. A good propagandist doesn't have to start out with that intention. Many are recruited after they have developed rapport and trust with their listeners or readers.
I would hope a man with his (previous) mindset would smell that a mile away.
perhaps he has, and is playing it both ways? Oh well, it will come out soon enough when the wash is hung out to dry in the sun.
Meanwhile, I listen for the entertainment value, and when no longer so, change the station.
On another note, while we are suspectin', shooting him down as a failure would be the coup of the decade for the left, and perhaps that is their intent all along, not the defeat of trump, but the defeat of Mr. Limbaugh.