I heard this explained as the Colorado GOPe was so upset by the choices foisted on them by the tea party in 2010 they went into OT to ensure that would not happen again i.e. having the party dictated to by the people. So, they put in place this bastard child process that basically disenfranchises anyone who dismisses the will of the party officials.
Your point is correct, Cruz is nothing more here now than the face of the GOPe. Once the general convention fails to pass a winner on the first round, the games begin. Many of Cruz’s delegates will bolt to what the party officials want be it Yep, Gaysick, Firorino etc. As the voting continues more votes will be pulled off Cruz and some off Trump and finally Trump will bolt and the die will be cast.
Notice that one does not hear Karl and his bunch saying squat these days. They know the game and are not going to comment. Most insiders know the game too and are not going say a word either. Recall the big anti Trump coordinated attack was to start right after April 1st along with his being removed from network TV. Lastly, Cruz the simpleton was given his head knowing there is not a chance he gets to 1237 so he was played like a fiddle, give him the caucauses and the set ups and let him aggravate Trump to the point he explodes and leaves the playing field. The pin setter comes down and a new frame begins with all the pins in play. Teddy will find that his rolls then become gutter balls as he gets passed by faster than a naked hobo.
Scarborough was blasting the process for both parties this morning. Sanders won Colorado by 13%. Hillary got 13 delegates and Sanders 7.
Time to change the system. Only Trump can/will do it, once he beats the system.