That they're pumping Carly so hard (my apologies for the imagery), looks like a good sign to me.
It means Trump's going down, which means this really is like last time, with assorted clowns surging in succession through the summer.
It would mean that the field's still wide open.
They're going to push Carly hard, that is certainly true. And she will certainly see a dramatic increase in polling numbers, but I'm not sold that the Trump voters will leave him. He's got this weird thing going in which the people who like him, like him because he's an asshole who is hated by everyone including the media and other politicians.
When the media rips Trump, his supporters double down on him. I don't know what anyone can do to pull people away from him, other than beat him at his own game, which really shouldn't be that hard to do. Just goad him into being a bombastic ass, and then counter with a line that makes him come off as the clown-child he is.
It is entirely possible that this nomination will come down to a non-Trump outsider candidate (Carly, Carson, or possibly Rand), Trump, and an establishment candidate (Jeb, Cruz, Rubio, Rand). If Rand can last, he might be able to pull enough support from those who want a non-Trump outsider, and those who want an establishment candidate, to actually win. The path is WAY more difficult with Trump mucking things up now, though, and I hope that he leaves sooner rather than later.