That's ridiculous Tom. I see no value to allowing coaches to rate and post comments like that. If they're going to be allowed to do that, there should be a time frame imposed - like they can't rate/post comments for the first 48 hours after the game. I know the previous HS assignor around here did not take calls from coaches/AD's until a full 24 hours had passed - so the coaches had to go to another practice or game and couldn't just vent in the heat of the moment after the game ended. An assignor I work for now allows coaches to send in game reports immediately - so I had a game last year where the assignor called me before I was out of the locker room and had a game report in hand - the coach e-mailed it in within 5 min. of the game ending. Ridiculous.
And btw - just to reinforce you (which I know you don't need) - that coach is a grade A a$$-hole.