It was just one tk. Everyone becomes greedy when its 6v1 at end of round. Jason should not be banned for this.
But it was
not the first time he's been banned for TKing.
As indicated by the screenshot, Jason ran over a teammate, dealing damage, and enough time passed for it to be reported in-between that and the second pass, where the teamkill occured. At best, that's extreme recklessness.
I'll end your ban early, sometime tomorrow, but be more careful for Pete's sake. I'll make another post here letting you know when the ban is lifted.