I can't be for certain but my guess is vaginitis If I had anything to do with it there is no doubt my diagnosis is spot on (like that @islstl ) He loved to talk about all the hob knobbing he did and all the inside info he had. The problem is he would always stop short and never really say anything.
vaginitis does strike 1 in every 3 American men and since it's mainly a left wing disease (see Red), you have to apply ointment liberally
and that's one view but another is that he may have had a line he wouldn't cross with the info he had. i think he may have felt an obligation to not share too much, as if he were betraying a confidence. i think that was his value system, his unwritten coaching brotherhood rule, his moral compass, etc. i think as well that dad thought he was sharing as much as he felt he could and was ridiculed for it to the point he left. of course he joins the rest of those who didn't have the chest to stick around i hope he comes back around
I get it, I really do. However I shall issue the same challenge as before. Find anything of substance that he did share? Happy hunting.