Very smart. It sounds like he is getting ready for a graceful exit.
I think it is merely a matter of time until he exits the race. (Considering his plummeting poll numbers, it is unlikely that he will be the eventual GOP nominee.)
Of course, it remains uncertain whether Donald Trump will be that nominee. (Some believe that he will eventually implode. But that theory has been around for quite awhile now; and The Donald is still leading the polls.)
There is still plenty of time for someone to overtake him--perhaps a Marco Rubio or a Ted Cruz--but it is not the inevitability that many people once believed it to be.