Depends on the nature of the league. If it's a casual league, just a bunch of friends, no monetary rewards for the winner, etc.; then it's not that big of a deal, though it would still annoy me. If the winner gets anything for winning, (money/prize/whatever) then that's REALLY uncool and you should for the trade to be null, call a vote and make them trade their players back, or something.
It depends, I guess, is what I'm saying. I'd never do that to anyone personally, but I'm all about relatively fair competition. I certainly don't feel satisfied winning anything with cheat codes.
Rams bet status: honored. Bradford still sucks.
RedAlice is right.
"VICTORYYYYYYY!" -Johnny Drama