I would guess that localonecrew is posting information that IS CORRECT AT THE TIME. Whether he sounds arrogant or not isn't my point. The fact that a week after he posts something the producers decide on a different theatre or a star backs out, or contract negotations continue to deadlock is something he couldn't predict. Does that make his earlier information wrong? Well of course it does. Does it make him wrong for posting it in the first place? Absolutely not.
Nothing precious, plain to see, don't make a fuss over me. Not loud, not soft, but somewhere inbetween. Say sorry, just let it be the word you mean.