Second time there is a problem with fans and attendance and second time my attendance gets untouched. I was playing on TV against a rival and had a little more than half attendance... I really wanna know what sort of excuse they'll find now.
The fact that the match is a TV match against a rival doesn't really boost the attendance numbers (I agree that it should, it's just not done that way now). Maybe it's because it wouldn't be fair to everyone if it was since we have 3 TV matches and you might only have one rival match which might not be a home one.
So, looking at your numbers from before the playoffs (which are severily boosted in attendance and cannot compare), you can compare them quite easily to your first match, considering that the start of the season always sees a cooldown by the fans (this happens to everyone).