There are reports of an aimbot for the Football mode for shooting the ball, and apparently lots of people use it (in the tournament). Official quote regarding such mods (from Berbo, associate Esports Manager EU):
To answer to all the questions regarding the disappearance of T62 tank, please check the announcement news of Tank football for this text:
This is another reminder not to use any tool/mood/anything which gives an unfair advantage over your opponents during the whole tournament and the fun mode period.
In case you have additional questions, please post them in our Q&A topic.