Every single time I score any goal with points through value modification (regardless of amount), it results in the same as the issue in the video above.
I hope that I am wrong and that someone is able to find a workaround.
EDIT: I just attempted again, I only added approximately 20 Ball Points (I played the rest of the match fully legit), but as soon as I scored with the 20 Ball Points, the same issue occurred. It "desynced" me from the game and all allies/enemies started playing like malfunctional bots. The match resulted in a defeat and the End-Game-Screen results are different from the results in Match History. Seems like it is absolutely impossible to cheat through GameGuardian now, since the game is instantly detecting any sort of tamper through value modification. =/