Apparently it seems they're worried that the games may be vacated, and there would be no point in awarding them. And to because they're worried the current guys will sell them-
"If they vacate the win, it makes no sense to award the gold pants, at least in our minds," Lachey said. "And if you hand them out and say, 'Oh yeah, we'll need to get them back if the win is vacated' - I'm pretty sure that wouldn't be a smart way to go. And I'll be honest: We don't want to see any 2010 gold pants on the market right now."