I did end up getting a response from him. In the past he would not have responded at all, and likely sent my S a nasty text saying that he would let my son know when he could see him (for over a year he refused to coordinate anything with me schedule-wise). So I guess that continues to be progress and suggest that he has not returned to monster mode.
He thanked me and said he had to check his work schedule (uh huh) and that he would get back to me next week. Whether he will, who knows, but at least he gave a polite response, even if it took him two days and he could have told me the same thing upon receiving it (insofar as he didn't actually give me any dates). He did not show up for the race (but son won both events and had a good time).
