well, it happened again today in my other team. I have 3 active teams this season, so the "bugs" are coming X3 - lolInjuries and random factor of the game (not always, but more often than it should be) are the weakness of the game - for me.
after a red card, oppo (wasn't watching)
I switched to attack, high pitch, scored two goals, but before switched again to defense (because it was smelling a troll around), oppo scored again.
Ok, it was a fix result, I had to loose because I had four victories in a raw, so the time had come
(it's the game mechanics that way, you 'll discover those things later)