Could be that. Or, it could be that they are flat out cynically lying to the public. Not sure which it is, but too much of it going on lately. If there is really a need, give us more information. Everything doesn't have to be top secret. I simply don't believe that.
I suspect tomschlick is correct (I've said similar things here before) but I also agree with you. I would feel so much better if he would come out and say, "When I was campaigning I said X- but now that I've learned more about it I'm breaking my promise and am going with !X."