Nothing cowardly about rescinding a poor bet, that no one took it upon themselves to take up and win.
If I bet $1K USD that the Browns will go to the Super Bowl - no one takes me up on it... Then I take it back in week 10 when they are only able to make it by winning out the season .... Doesn't make me a coward. A fool maybe for thinking I was so right.... But not a coward.