I don't think it was correct for Sin to give the free round here. The ko was guaranteed, the final round was not started. Terrible decision.
This was a crazy situation!
Sin goes for ff2 and the KO is guaranteed BUT his controller DC before the delayed damage comes through.
The TWT Rules say: "If a Match Disruption occurs during a move or animation, and after the game has been unpaused, the round ends with no further inputs from either Player, a Player that caused a Match Disruption will not forfeit the current round of the Set."
So was it correct for Sin to forfeit the round? Really unique situation 😱