No. He's staying in on a hope and prayer that he takes FL, but since FL and OH races are on the same day, he wants Ohio voters to reject him (to better Kasich's chances).
It's Romney's "vote for the best chance to beat Trump in each state" strategy in action. In other words, the GOPe is entirely in negative mode, it doesn't support ANY individual candidate, but all the losers are going to gang up the leader in an effort to prevent the leader from taking a majority of delegates.
Nothing more than the GOP fighting unfairly, but that is to be expected.