You must have listened to a different show. I heard him say that they probably won’t get out.
Between around 12:50 and 1:30 central time, Rush bemoaned that Trump was appealing to populism, and it could destroy the GOP...and it culminated with his imploring people, even though in his words it was ‘counter-intuitive’ to vote Trump, to get Kasich and Rubio out. It all started when a caller said he was 45 y/o and had never voted but was now voting for Trump.
They both announced they were in it though all 50 states. Kacish will probably change his mind again before it is over.