@Svennin hey I'm new here but it is most probably a hack because like you said only a small portion of players can "Jam" and they are known and mainly consist of game devs or admins
And also it is the most common hacking trick in the book because by "jamming" there data tracking and combat logs they can also rewrite the code to say they've won majority of there battles... but like i said I'm new here so i don't really know what goes on yet