SWKCB, Of course the need for trained ATC did not come as a shock - they had been operating ATC at CAX for years, they did not need to be told by others. What may have caught them out was recruiting the numbers they needed when the length of operating day was increased from 8 hours to 15, or even longer when provision for delays was included. So I for one am quite prepared to accept the CAX explanation for postponement as valid and if there are other unstated reasons no doubt they will become apparent in the fullness of time.
I've no reason to doubt that it is reason, but if recruitment and training is such a long lead item how have they been caught out? It is hard to believe that they only knew a few days before the launch of services that they couldn't operate as advertised.