So Ted Cruz and John Kasich have agreed to co-ordinate efforts to deny Trump the delegates for the Republican nomination for president. The question is why. Actually, the real question is "Why make that public?"
What's the gain in letting everyone, including Team Trump know that? Is it to inform voters how they'd like them to vote? Is it to scare Trump into panicking and making a campaign mistake? Is it to tacitly inform Super-PACs how to spend their money more effectively to counter Trump's momentum post New York? As Trump suggests, is it desperation? Is it to avoid the appearance impropriety because they've already been doing just that?
I don't see any real upside to it.