I don't believe what you did warranted even a consideration of a forfeit.
But I have a question. What if you were successful in extending the game and the other team made a comeback and are now within a run or two, but if you have the opportunity to run the clock out. However, if your team can wrap up this half inning in quick manner, the last three players in the line-up will get an opportunity to bat one more time. Do you play to get in the next inning or stall to win the game?
You know there is a belief in some circles that a fighter who doesn't knock out his opponent when the opportunity arises, doesn't deserve to win the fight.