You know what just happened? a mirracle! i am not joking
after i red your post i was dreaming that my rival wouldnt have me as rival anymore and it happened! Checked his rival and its some fricken bot now, not be again, he had me as rival last time i checked, probably 2-3 days ago:D So they probably updated rivals. Maybe because 2 teams got me as their rival, so 1 of them got changed rival.