Trump only has a valid point if you take his word for what happened.
If you look at the facts, not so much. Plenty of people who weren’t on Cruz’s team saw the CNN report the exact same way — that Carson was pulling out. I thought so myself. A rational person would blame either CNN or Carson’s own people for reporting the situation so stupidly (depending on what CNN knew with the initial reports).
You are correct. Add to that the fact that Carson’s wife was at one of the caucuses when this information came out and set the record straight at that caucus. My question is why she didn’t get ahold of the Carson campaign so it could contact the other caucuses and put the issue to a rest. Seems this is more a case of amateur night on the Carson campaigns part from beginning of the Carson announcement to the end of the rumor rather than a dirty trick. But then Trump folks seem run off half cocked before finding out the facts.