“Trump has said that there are a number of GOP players who can’t publicly support him, but will”
I guess that makes him a trojan horse establishment shill....
The "establishment shill" label inevitably attaches. Some existing elected politicians are going to support (or at least put on a good act of support) the presumed and eventual nominee, no matter who it is.
The "trojan horse" aspect attached to Cruz before Jeb, Rubio, etc. came aboard the Cruz-train. I suppose he could still be a trojan horse, just working against the establishment camp instead of against the insurgents's camp.