Its very tricky. At 9 this morning, there was no where near enough snow to even consider calling it off. So what do they do? Take the forecast as read and call it off? Weather forecasters are notorious for not getting things right. If they made the decision at 9 to call it off and the snow never appeared, they would probably get as much flak for being too hasty. I guess leaving it until later give the match as much chance as possible to happen.
It is a pisser for the away fans mind - totally agree with that.